Home / 18,189.72-25,044.66-15,818.04

Finding the Fourth Proportional to 18,189.72, 25,044.66 and 15,818.04

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Solution

The fourth proportional to 18,189.72, 25,044.66 and 15,818.04 is: 21,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.72 : 25,044.66 = 15,818.04 : x
  2. Step 2: Convert to fraction form
    18,189.72/25,044.66 = 15,818.04/x
  3. Step 3: Cross multiply
    18,189.72x = 25,044.66 × 15,818.04
  4. Step 4: Simplify right side
    18,189.72x = 396,157,433.67
  5. Step 5: Solve for x
    x = 396,157,433.67/18,189.72
  6. Step 6: Final answer
    x = 21,779.19

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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.