Home / 18,685,714.80-28,028,572.20-12,308,422.80

Finding the Fourth Proportional to 18,685,714.80, 28,028,572.20 and 12,308,422.80

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Solution

The fourth proportional to 18,685,714.80, 28,028,572.20 and 12,308,422.80 is: 18,462,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,714.80 : 28,028,572.20 = 12,308,422.80 : x
  2. Step 2: Convert to fraction form
    18,685,714.80/28,028,572.20 = 12,308,422.80/x
  3. Step 3: Cross multiply
    18,685,714.80x = 28,028,572.20 × 12,308,422.80
  4. Step 4: Simplify right side
    18,685,714.80x = 344,987,517,117,926.19
  5. Step 5: Solve for x
    x = 344,987,517,117,926.19/18,685,714.80
  6. Step 6: Final answer
    x = 18,462,634.20

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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.