Home / 20,960.22-28,934.10-14,981.46

Finding the Fourth Proportional to 20,960.22, 28,934.10 and 14,981.46

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Solution

The fourth proportional to 20,960.22, 28,934.10 and 14,981.46 is: 20,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.22 : 28,934.10 = 14,981.46 : x
  2. Step 2: Convert to fraction form
    20,960.22/28,934.10 = 14,981.46/x
  3. Step 3: Cross multiply
    20,960.22x = 28,934.10 × 14,981.46
  4. Step 4: Simplify right side
    20,960.22x = 433,475,061.79
  5. Step 5: Solve for x
    x = 433,475,061.79/20,960.22
  6. Step 6: Final answer
    x = 20,680.85

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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.