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Finding the Fourth Proportional to 15,687.54, 23,510.05 and 8,657.01

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Solution

The fourth proportional to 15,687.54, 23,510.05 and 8,657.01 is: 12,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.54 : 23,510.05 = 8,657.01 : x
  2. Step 2: Convert to fraction form
    15,687.54/23,510.05 = 8,657.01/x
  3. Step 3: Cross multiply
    15,687.54x = 23,510.05 × 8,657.01
  4. Step 4: Simplify right side
    15,687.54x = 203,526,716.31
  5. Step 5: Solve for x
    x = 203,526,716.31/15,687.54
  6. Step 6: Final answer
    x = 12,973.78

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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.