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Finding the Fourth Proportional to 18,687.59, 25,762.08 and 14,701.78

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Solution

The fourth proportional to 18,687.59, 25,762.08 and 14,701.78 is: 20,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.59 : 25,762.08 = 14,701.78 : x
  2. Step 2: Convert to fraction form
    18,687.59/25,762.08 = 14,701.78/x
  3. Step 3: Cross multiply
    18,687.59x = 25,762.08 × 14,701.78
  4. Step 4: Simplify right side
    18,687.59x = 378,748,432.50
  5. Step 5: Solve for x
    x = 378,748,432.50/18,687.59
  6. Step 6: Final answer
    x = 20,267.38

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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.