Home / 21,901.91-32,892.47-20,143.76

Finding the Fourth Proportional to 21,901.91, 32,892.47 and 20,143.76

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Solution

The fourth proportional to 21,901.91, 32,892.47 and 20,143.76 is: 30,252.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.91 : 32,892.47 = 20,143.76 : x
  2. Step 2: Convert to fraction form
    21,901.91/32,892.47 = 20,143.76/x
  3. Step 3: Cross multiply
    21,901.91x = 32,892.47 × 20,143.76
  4. Step 4: Simplify right side
    21,901.91x = 662,577,907.38
  5. Step 5: Solve for x
    x = 662,577,907.38/21,901.91
  6. Step 6: Final answer
    x = 30,252.07

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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.