Home / 22,989.30-31,737.87-21,644.70

Finding the Fourth Proportional to 22,989.30, 31,737.87 and 21,644.70

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Solution

The fourth proportional to 22,989.30, 31,737.87 and 21,644.70 is: 29,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,989.30 : 31,737.87 = 21,644.70 : x
  2. Step 2: Convert to fraction form
    22,989.30/31,737.87 = 21,644.70/x
  3. Step 3: Cross multiply
    22,989.30x = 31,737.87 × 21,644.70
  4. Step 4: Simplify right side
    22,989.30x = 686,956,674.79
  5. Step 5: Solve for x
    x = 686,956,674.79/22,989.30
  6. Step 6: Final answer
    x = 29,881.58

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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.