Home / 20,686.13-31,032.01-6,641.49

Finding the Fourth Proportional to 20,686.13, 31,032.01 and 6,641.49

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Solution

The fourth proportional to 20,686.13, 31,032.01 and 6,641.49 is: 9,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.13 : 31,032.01 = 6,641.49 : x
  2. Step 2: Convert to fraction form
    20,686.13/31,032.01 = 6,641.49/x
  3. Step 3: Cross multiply
    20,686.13x = 31,032.01 × 6,641.49
  4. Step 4: Simplify right side
    20,686.13x = 206,098,908.77
  5. Step 5: Solve for x
    x = 206,098,908.77/20,686.13
  6. Step 6: Final answer
    x = 9,963.14

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1.5x scale

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.