Home / 20,459.57-28,236.90-15,169.46

Finding the Fourth Proportional to 20,459.57, 28,236.90 and 15,169.46

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Solution

The fourth proportional to 20,459.57, 28,236.90 and 15,169.46 is: 20,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.57 : 28,236.90 = 15,169.46 : x
  2. Step 2: Convert to fraction form
    20,459.57/28,236.90 = 15,169.46/x
  3. Step 3: Cross multiply
    20,459.57x = 28,236.90 × 15,169.46
  4. Step 4: Simplify right side
    20,459.57x = 428,338,525.07
  5. Step 5: Solve for x
    x = 428,338,525.07/20,459.57
  6. Step 6: Final answer
    x = 20,935.85

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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.