Home / 25,460.20-38,139.18-12,979.72

Finding the Fourth Proportional to 25,460.20, 38,139.18 and 12,979.72

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Solution

The fourth proportional to 25,460.20, 38,139.18 and 12,979.72 is: 19,443.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,460.20 : 38,139.18 = 12,979.72 : x
  2. Step 2: Convert to fraction form
    25,460.20/38,139.18 = 12,979.72/x
  3. Step 3: Cross multiply
    25,460.20x = 38,139.18 × 12,979.72
  4. Step 4: Simplify right side
    25,460.20x = 495,035,877.43
  5. Step 5: Solve for x
    x = 495,035,877.43/25,460.20
  6. Step 6: Final answer
    x = 19,443.52

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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.