Home / 25,859.78-38,753.51-13,987.92

Finding the Fourth Proportional to 25,859.78, 38,753.51 and 13,987.92

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Solution

The fourth proportional to 25,859.78, 38,753.51 and 13,987.92 is: 20,962.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,859.78 : 38,753.51 = 13,987.92 : x
  2. Step 2: Convert to fraction form
    25,859.78/38,753.51 = 13,987.92/x
  3. Step 3: Cross multiply
    25,859.78x = 38,753.51 × 13,987.92
  4. Step 4: Simplify right side
    25,859.78x = 542,080,927.66
  5. Step 5: Solve for x
    x = 542,080,927.66/25,859.78
  6. Step 6: Final answer
    x = 20,962.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.