Home / 28,272.78-38,990.97-17,663.46

Finding the Fourth Proportional to 28,272.78, 38,990.97 and 17,663.46

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Solution

The fourth proportional to 28,272.78, 38,990.97 and 17,663.46 is: 24,359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.78 : 38,990.97 = 17,663.46 : x
  2. Step 2: Convert to fraction form
    28,272.78/38,990.97 = 17,663.46/x
  3. Step 3: Cross multiply
    28,272.78x = 38,990.97 × 17,663.46
  4. Step 4: Simplify right side
    28,272.78x = 688,715,438.96
  5. Step 5: Solve for x
    x = 688,715,438.96/28,272.78
  6. Step 6: Final answer
    x = 24,359.66

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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.