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Finding the Fourth Proportional to 16,687.68, 23,028.48 and 9,235.68

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Solution

The fourth proportional to 16,687.68, 23,028.48 and 9,235.68 is: 12,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,687.68 : 23,028.48 = 9,235.68 : x
  2. Step 2: Convert to fraction form
    16,687.68/23,028.48 = 9,235.68/x
  3. Step 3: Cross multiply
    16,687.68x = 23,028.48 × 9,235.68
  4. Step 4: Simplify right side
    16,687.68x = 212,683,672.17
  5. Step 5: Solve for x
    x = 212,683,672.17/16,687.68
  6. Step 6: Final answer
    x = 12,744.95

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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.