Home / 20,517.65-28,362.18-18,301.49

Finding the Fourth Proportional to 20,517.65, 28,362.18 and 18,301.49

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Solution

The fourth proportional to 20,517.65, 28,362.18 and 18,301.49 is: 25,298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.65 : 28,362.18 = 18,301.49 : x
  2. Step 2: Convert to fraction form
    20,517.65/28,362.18 = 18,301.49/x
  3. Step 3: Cross multiply
    20,517.65x = 28,362.18 × 18,301.49
  4. Step 4: Simplify right side
    20,517.65x = 519,070,011.84
  5. Step 5: Solve for x
    x = 519,070,011.84/20,517.65
  6. Step 6: Final answer
    x = 25,298.71

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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.