Home / 12,729,781.68-17,565,774.84-7,221,401.52

Finding the Fourth Proportional to 12,729,781.68, 17,565,774.84 and 7,221,401.52

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Solution

The fourth proportional to 12,729,781.68, 17,565,774.84 and 7,221,401.52 is: 9,964,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729,781.68 : 17,565,774.84 = 7,221,401.52 : x
  2. Step 2: Convert to fraction form
    12,729,781.68/17,565,774.84 = 7,221,401.52/x
  3. Step 3: Cross multiply
    12,729,781.68x = 17,565,774.84 × 7,221,401.52
  4. Step 4: Simplify right side
    12,729,781.68x = 126,849,513,129,553.75
  5. Step 5: Solve for x
    x = 126,849,513,129,553.75/12,729,781.68
  6. Step 6: Final answer
    x = 9,964,783.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.