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Finding the Fourth Proportional to 16,688.70, 24,972.30 and 12,314.70

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Solution

The fourth proportional to 16,688.70, 24,972.30 and 12,314.70 is: 18,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,688.70 : 24,972.30 = 12,314.70 : x
  2. Step 2: Convert to fraction form
    16,688.70/24,972.30 = 12,314.70/x
  3. Step 3: Cross multiply
    16,688.70x = 24,972.30 × 12,314.70
  4. Step 4: Simplify right side
    16,688.70x = 307,526,382.81
  5. Step 5: Solve for x
    x = 307,526,382.81/16,688.70
  6. Step 6: Final answer
    x = 18,427.22

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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.