Home / 15,645.31-23,471.62-5,115.83

Finding the Fourth Proportional to 15,645.31, 23,471.62 and 5,115.83

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Solution

The fourth proportional to 15,645.31, 23,471.62 and 5,115.83 is: 7,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.31 : 23,471.62 = 5,115.83 : x
  2. Step 2: Convert to fraction form
    15,645.31/23,471.62 = 5,115.83/x
  3. Step 3: Cross multiply
    15,645.31x = 23,471.62 × 5,115.83
  4. Step 4: Simplify right side
    15,645.31x = 120,076,687.60
  5. Step 5: Solve for x
    x = 120,076,687.60/15,645.31
  6. Step 6: Final answer
    x = 7,674.93

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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.