Home / 27,705.08-38,232.42-15,129.88

Finding the Fourth Proportional to 27,705.08, 38,232.42 and 15,129.88

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Solution

The fourth proportional to 27,705.08, 38,232.42 and 15,129.88 is: 20,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,705.08 : 38,232.42 = 15,129.88 : x
  2. Step 2: Convert to fraction form
    27,705.08/38,232.42 = 15,129.88/x
  3. Step 3: Cross multiply
    27,705.08x = 38,232.42 × 15,129.88
  4. Step 4: Simplify right side
    27,705.08x = 578,451,926.71
  5. Step 5: Solve for x
    x = 578,451,926.71/27,705.08
  6. Step 6: Final answer
    x = 20,878.91

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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.