Home / 25,402.20-38,140.29-18,759.20

Finding the Fourth Proportional to 25,402.20, 38,140.29 and 18,759.20

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Solution

The fourth proportional to 25,402.20, 38,140.29 and 18,759.20 is: 28,166.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,402.20 : 38,140.29 = 18,759.20 : x
  2. Step 2: Convert to fraction form
    25,402.20/38,140.29 = 18,759.20/x
  3. Step 3: Cross multiply
    25,402.20x = 38,140.29 × 18,759.20
  4. Step 4: Simplify right side
    25,402.20x = 715,481,137.47
  5. Step 5: Solve for x
    x = 715,481,137.47/25,402.20
  6. Step 6: Final answer
    x = 28,166.11

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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.