Home / 28,141.31-38,818.08-18,581.28

Finding the Fourth Proportional to 28,141.31, 38,818.08 and 18,581.28

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Solution

The fourth proportional to 28,141.31, 38,818.08 and 18,581.28 is: 25,630.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.31 : 38,818.08 = 18,581.28 : x
  2. Step 2: Convert to fraction form
    28,141.31/38,818.08 = 18,581.28/x
  3. Step 3: Cross multiply
    28,141.31x = 38,818.08 × 18,581.28
  4. Step 4: Simplify right side
    28,141.31x = 721,289,613.54
  5. Step 5: Solve for x
    x = 721,289,613.54/28,141.31
  6. Step 6: Final answer
    x = 25,630.99

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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.