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Finding the Fourth Proportional to 35,114.20, 52,685.70 and 12,938.20

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Solution

The fourth proportional to 35,114.20, 52,685.70 and 12,938.20 is: 19,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,114.20 : 52,685.70 = 12,938.20 : x
  2. Step 2: Convert to fraction form
    35,114.20/52,685.70 = 12,938.20/x
  3. Step 3: Cross multiply
    35,114.20x = 52,685.70 × 12,938.20
  4. Step 4: Simplify right side
    35,114.20x = 681,658,123.74
  5. Step 5: Solve for x
    x = 681,658,123.74/35,114.20
  6. Step 6: Final answer
    x = 19,412.61

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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.