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Finding the Fourth Proportional to 37,874.70, 56,812.05 and 12,942.90

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Solution

The fourth proportional to 37,874.70, 56,812.05 and 12,942.90 is: 19,414.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,874.70 : 56,812.05 = 12,942.90 : x
  2. Step 2: Convert to fraction form
    37,874.70/56,812.05 = 12,942.90/x
  3. Step 3: Cross multiply
    37,874.70x = 56,812.05 × 12,942.90
  4. Step 4: Simplify right side
    37,874.70x = 735,312,681.95
  5. Step 5: Solve for x
    x = 735,312,681.95/37,874.70
  6. Step 6: Final answer
    x = 19,414.35

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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.