Home / 27,657.90-38,170.17-15,724.98

Finding the Fourth Proportional to 27,657.90, 38,170.17 and 15,724.98

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Solution

The fourth proportional to 27,657.90, 38,170.17 and 15,724.98 is: 21,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,657.90 : 38,170.17 = 15,724.98 : x
  2. Step 2: Convert to fraction form
    27,657.90/38,170.17 = 15,724.98/x
  3. Step 3: Cross multiply
    27,657.90x = 38,170.17 × 15,724.98
  4. Step 4: Simplify right side
    27,657.90x = 600,225,159.85
  5. Step 5: Solve for x
    x = 600,225,159.85/27,657.90
  6. Step 6: Final answer
    x = 21,701.76

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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.