Home / 12,516,279.19-18,740,781.69-7,942,565.17

Finding the Fourth Proportional to 12,516,279.19, 18,740,781.69 and 7,942,565.17

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Solution

The fourth proportional to 12,516,279.19, 18,740,781.69 and 7,942,565.17 is: 11,892,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516,279.19 : 18,740,781.69 = 7,942,565.17 : x
  2. Step 2: Convert to fraction form
    12,516,279.19/18,740,781.69 = 7,942,565.17/x
  3. Step 3: Cross multiply
    12,516,279.19x = 18,740,781.69 × 7,942,565.17
  4. Step 4: Simplify right side
    12,516,279.19x = 148,849,879,909,567.75
  5. Step 5: Solve for x
    x = 148,849,879,909,567.75/12,516,279.19
  6. Step 6: Final answer
    x = 11,892,502.37

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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.