Home / 25,572.24-38,348.28-12,420.72

Finding the Fourth Proportional to 25,572.24, 38,348.28 and 12,420.72

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Solution

The fourth proportional to 25,572.24, 38,348.28 and 12,420.72 is: 18,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,572.24 : 38,348.28 = 12,420.72 : x
  2. Step 2: Convert to fraction form
    25,572.24/38,348.28 = 12,420.72/x
  3. Step 3: Cross multiply
    25,572.24x = 38,348.28 × 12,420.72
  4. Step 4: Simplify right side
    25,572.24x = 476,313,248.36
  5. Step 5: Solve for x
    x = 476,313,248.36/25,572.24
  6. Step 6: Final answer
    x = 18,626.18

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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.