Home / 25,411.15-38,151.64-12,939.56

Finding the Fourth Proportional to 25,411.15, 38,151.64 and 12,939.56

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Solution

The fourth proportional to 25,411.15, 38,151.64 and 12,939.56 is: 19,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,411.15 : 38,151.64 = 12,939.56 : x
  2. Step 2: Convert to fraction form
    25,411.15/38,151.64 = 12,939.56/x
  3. Step 3: Cross multiply
    25,411.15x = 38,151.64 × 12,939.56
  4. Step 4: Simplify right side
    25,411.15x = 493,665,434.88
  5. Step 5: Solve for x
    x = 493,665,434.88/25,411.15
  6. Step 6: Final answer
    x = 19,427.12

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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.