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Finding the Fourth Proportional to 28,030.38, 38,660.04 and 17,959.74

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Solution

The fourth proportional to 28,030.38, 38,660.04 and 17,959.74 is: 24,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.38 : 38,660.04 = 17,959.74 : x
  2. Step 2: Convert to fraction form
    28,030.38/38,660.04 = 17,959.74/x
  3. Step 3: Cross multiply
    28,030.38x = 38,660.04 × 17,959.74
  4. Step 4: Simplify right side
    28,030.38x = 694,324,266.79
  5. Step 5: Solve for x
    x = 694,324,266.79/28,030.38
  6. Step 6: Final answer
    x = 24,770.42

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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.