Home / 21,901.19-32,731.79-15,990.54

Finding the Fourth Proportional to 21,901.19, 32,731.79 and 15,990.54

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Solution

The fourth proportional to 21,901.19, 32,731.79 and 15,990.54 is: 23,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.19 : 32,731.79 = 15,990.54 : x
  2. Step 2: Convert to fraction form
    21,901.19/32,731.79 = 15,990.54/x
  3. Step 3: Cross multiply
    21,901.19x = 32,731.79 × 15,990.54
  4. Step 4: Simplify right side
    21,901.19x = 523,398,935.43
  5. Step 5: Solve for x
    x = 523,398,935.43/21,901.19
  6. Step 6: Final answer
    x = 23,898.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.