Home / 15,115.25-20,857.61-14,000.69

Finding the Fourth Proportional to 15,115.25, 20,857.61 and 14,000.69

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Solution

The fourth proportional to 15,115.25, 20,857.61 and 14,000.69 is: 19,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.25 : 20,857.61 = 14,000.69 : x
  2. Step 2: Convert to fraction form
    15,115.25/20,857.61 = 14,000.69/x
  3. Step 3: Cross multiply
    15,115.25x = 20,857.61 × 14,000.69
  4. Step 4: Simplify right side
    15,115.25x = 292,020,757.46
  5. Step 5: Solve for x
    x = 292,020,757.46/15,115.25
  6. Step 6: Final answer
    x = 19,319.62

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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.