Home / 21,154.92-31,670.11-15,632.90

Finding the Fourth Proportional to 21,154.92, 31,670.11 and 15,632.90

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Solution

The fourth proportional to 21,154.92, 31,670.11 and 15,632.90 is: 23,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.92 : 31,670.11 = 15,632.90 : x
  2. Step 2: Convert to fraction form
    21,154.92/31,670.11 = 15,632.90/x
  3. Step 3: Cross multiply
    21,154.92x = 31,670.11 × 15,632.90
  4. Step 4: Simplify right side
    21,154.92x = 495,095,426.10
  5. Step 5: Solve for x
    x = 495,095,426.10/21,154.92
  6. Step 6: Final answer
    x = 23,403.33

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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.