Home / 22,685.81-31,304.27-21,013.97

Finding the Fourth Proportional to 22,685.81, 31,304.27 and 21,013.97

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Solution

The fourth proportional to 22,685.81, 31,304.27 and 21,013.97 is: 28,997.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,685.81 : 31,304.27 = 21,013.97 : x
  2. Step 2: Convert to fraction form
    22,685.81/31,304.27 = 21,013.97/x
  3. Step 3: Cross multiply
    22,685.81x = 31,304.27 × 21,013.97
  4. Step 4: Simplify right side
    22,685.81x = 657,826,886.67
  5. Step 5: Solve for x
    x = 657,826,886.67/22,685.81
  6. Step 6: Final answer
    x = 28,997.29

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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.