Home / 15,244.18-21,008.47-10,987.88

Finding the Fourth Proportional to 15,244.18, 21,008.47 and 10,987.88

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Solution

The fourth proportional to 15,244.18, 21,008.47 and 10,987.88 is: 15,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,244.18 : 21,008.47 = 10,987.88 : x
  2. Step 2: Convert to fraction form
    15,244.18/21,008.47 = 10,987.88/x
  3. Step 3: Cross multiply
    15,244.18x = 21,008.47 × 10,987.88
  4. Step 4: Simplify right side
    15,244.18x = 230,838,519.87
  5. Step 5: Solve for x
    x = 230,838,519.87/15,244.18
  6. Step 6: Final answer
    x = 15,142.73

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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.