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Finding the Fourth Proportional to 12,312,752.40, 18,478,459.80 and 8,051,504.40

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Solution

The fourth proportional to 12,312,752.40, 18,478,459.80 and 8,051,504.40 is: 12,083,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,752.40 : 18,478,459.80 = 8,051,504.40 : x
  2. Step 2: Convert to fraction form
    12,312,752.40/18,478,459.80 = 8,051,504.40/x
  3. Step 3: Cross multiply
    12,312,752.40x = 18,478,459.80 × 8,051,504.40
  4. Step 4: Simplify right side
    12,312,752.40x = 148,779,400,384,923.12
  5. Step 5: Solve for x
    x = 148,779,400,384,923.12/12,312,752.40
  6. Step 6: Final answer
    x = 12,083,358.42

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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.