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Finding the Fourth Proportional to 12,474.10, 18,707.10 and 4,152.70

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Solution

The fourth proportional to 12,474.10, 18,707.10 and 4,152.70 is: 6,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.10 : 18,707.10 = 4,152.70 : x
  2. Step 2: Convert to fraction form
    12,474.10/18,707.10 = 4,152.70/x
  3. Step 3: Cross multiply
    12,474.10x = 18,707.10 × 4,152.70
  4. Step 4: Simplify right side
    12,474.10x = 77,684,974.17
  5. Step 5: Solve for x
    x = 77,684,974.17/12,474.10
  6. Step 6: Final answer
    x = 6,227.70

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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.