Home / 15,239.28-20,983.48-13,340.24

Finding the Fourth Proportional to 15,239.28, 20,983.48 and 13,340.24

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Solution

The fourth proportional to 15,239.28, 20,983.48 and 13,340.24 is: 18,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.28 : 20,983.48 = 13,340.24 : x
  2. Step 2: Convert to fraction form
    15,239.28/20,983.48 = 13,340.24/x
  3. Step 3: Cross multiply
    15,239.28x = 20,983.48 × 13,340.24
  4. Step 4: Simplify right side
    15,239.28x = 279,924,520.97
  5. Step 5: Solve for x
    x = 279,924,520.97/15,239.28
  6. Step 6: Final answer
    x = 18,368.62

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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.