Home / 21,115,659.90-31,736,475.45-20,737,746.30

Finding the Fourth Proportional to 21,115,659.90, 31,736,475.45 and 20,737,746.30

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Solution

The fourth proportional to 21,115,659.90, 31,736,475.45 and 20,737,746.30 is: 31,168,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,659.90 : 31,736,475.45 = 20,737,746.30 : x
  2. Step 2: Convert to fraction form
    21,115,659.90/31,736,475.45 = 20,737,746.30/x
  3. Step 3: Cross multiply
    21,115,659.90x = 31,736,475.45 × 20,737,746.30
  4. Step 4: Simplify right side
    21,115,659.90x = 658,142,976,338,278.38
  5. Step 5: Solve for x
    x = 658,142,976,338,278.38/21,115,659.90
  6. Step 6: Final answer
    x = 31,168,477.78

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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.