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Finding the Fourth Proportional to 27,245.70, 37,600.40 and 15,312.78

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Solution

The fourth proportional to 27,245.70, 37,600.40 and 15,312.78 is: 21,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,245.70 : 37,600.40 = 15,312.78 : x
  2. Step 2: Convert to fraction form
    27,245.70/37,600.40 = 15,312.78/x
  3. Step 3: Cross multiply
    27,245.70x = 37,600.40 × 15,312.78
  4. Step 4: Simplify right side
    27,245.70x = 575,766,691.39
  5. Step 5: Solve for x
    x = 575,766,691.39/27,245.70
  6. Step 6: Final answer
    x = 21,132.39

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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.