Home / 19,875,760.90-27,428,385.04-11,173,972.21

Finding the Fourth Proportional to 19,875,760.90, 27,428,385.04 and 11,173,972.21

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Solution

The fourth proportional to 19,875,760.90, 27,428,385.04 and 11,173,972.21 is: 15,419,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875,760.90 : 27,428,385.04 = 11,173,972.21 : x
  2. Step 2: Convert to fraction form
    19,875,760.90/27,428,385.04 = 11,173,972.21/x
  3. Step 3: Cross multiply
    19,875,760.90x = 27,428,385.04 × 11,173,972.21
  4. Step 4: Simplify right side
    19,875,760.90x = 306,484,012,202,139.75
  5. Step 5: Solve for x
    x = 306,484,012,202,139.75/19,875,760.90
  6. Step 6: Final answer
    x = 15,419,988.89

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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.