Home / 12,929,125.12-17,841,864.64-7,127,772.80

Finding the Fourth Proportional to 12,929,125.12, 17,841,864.64 and 7,127,772.80

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Solution

The fourth proportional to 12,929,125.12, 17,841,864.64 and 7,127,772.80 is: 9,836,145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929,125.12 : 17,841,864.64 = 7,127,772.80 : x
  2. Step 2: Convert to fraction form
    12,929,125.12/17,841,864.64 = 7,127,772.80/x
  3. Step 3: Cross multiply
    12,929,125.12x = 17,841,864.64 × 7,127,772.80
  4. Step 4: Simplify right side
    12,929,125.12x = 127,172,757,482,273.80
  5. Step 5: Solve for x
    x = 127,172,757,482,273.80/12,929,125.12
  6. Step 6: Final answer
    x = 9,836,145.62

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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.