Home / 25,686.88-35,451.22-15,077.50

Finding the Fourth Proportional to 25,686.88, 35,451.22 and 15,077.50

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Solution

The fourth proportional to 25,686.88, 35,451.22 and 15,077.50 is: 20,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,686.88 : 35,451.22 = 15,077.50 : x
  2. Step 2: Convert to fraction form
    25,686.88/35,451.22 = 15,077.50/x
  3. Step 3: Cross multiply
    25,686.88x = 35,451.22 × 15,077.50
  4. Step 4: Simplify right side
    25,686.88x = 534,515,769.55
  5. Step 5: Solve for x
    x = 534,515,769.55/25,686.88
  6. Step 6: Final answer
    x = 20,808.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.