Home / 47,412.78-71,123.24-12,352.38

Finding the Fourth Proportional to 47,412.78, 71,123.24 and 12,352.38

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Solution

The fourth proportional to 47,412.78, 71,123.24 and 12,352.38 is: 18,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,412.78 : 71,123.24 = 12,352.38 : x
  2. Step 2: Convert to fraction form
    47,412.78/71,123.24 = 12,352.38/x
  3. Step 3: Cross multiply
    47,412.78x = 71,123.24 × 12,352.38
  4. Step 4: Simplify right side
    47,412.78x = 878,541,287.31
  5. Step 5: Solve for x
    x = 878,541,287.31/47,412.78
  6. Step 6: Final answer
    x = 18,529.63

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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.