Home / 20,410.23-28,158.87-13,340.76

Finding the Fourth Proportional to 20,410.23, 28,158.87 and 13,340.76

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Solution

The fourth proportional to 20,410.23, 28,158.87 and 13,340.76 is: 18,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.23 : 28,158.87 = 13,340.76 : x
  2. Step 2: Convert to fraction form
    20,410.23/28,158.87 = 13,340.76/x
  3. Step 3: Cross multiply
    20,410.23x = 28,158.87 × 13,340.76
  4. Step 4: Simplify right side
    20,410.23x = 375,660,726.54
  5. Step 5: Solve for x
    x = 375,660,726.54/20,410.23
  6. Step 6: Final answer
    x = 18,405.51

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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.