Home / 12,249,384.80-18,374,077.20-8,423,009.60

Finding the Fourth Proportional to 12,249,384.80, 18,374,077.20 and 8,423,009.60

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Solution

The fourth proportional to 12,249,384.80, 18,374,077.20 and 8,423,009.60 is: 12,634,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249,384.80 : 18,374,077.20 = 8,423,009.60 : x
  2. Step 2: Convert to fraction form
    12,249,384.80/18,374,077.20 = 8,423,009.60/x
  3. Step 3: Cross multiply
    12,249,384.80x = 18,374,077.20 × 8,423,009.60
  4. Step 4: Simplify right side
    12,249,384.80x = 154,765,028,646,741.09
  5. Step 5: Solve for x
    x = 154,765,028,646,741.09/12,249,384.80
  6. Step 6: Final answer
    x = 12,634,514.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.