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Finding the Fourth Proportional to 20,700.68, 28,600.34 and 14,441

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Solution

The fourth proportional to 20,700.68, 28,600.34 and 14,441 is: 19,951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.68 : 28,600.34 = 14,441 : x
  2. Step 2: Convert to fraction form
    20,700.68/28,600.34 = 14,441/x
  3. Step 3: Cross multiply
    20,700.68x = 28,600.34 × 14,441
  4. Step 4: Simplify right side
    20,700.68x = 413,017,509.94
  5. Step 5: Solve for x
    x = 413,017,509.94/20,700.68
  6. Step 6: Final answer
    x = 19,951.88

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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.