Home / 28,081.62-38,752.66-15,507.18

Finding the Fourth Proportional to 28,081.62, 38,752.66 and 15,507.18

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Solution

The fourth proportional to 28,081.62, 38,752.66 and 15,507.18 is: 21,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.62 : 38,752.66 = 15,507.18 : x
  2. Step 2: Convert to fraction form
    28,081.62/38,752.66 = 15,507.18/x
  3. Step 3: Cross multiply
    28,081.62x = 38,752.66 × 15,507.18
  4. Step 4: Simplify right side
    28,081.62x = 600,944,474.10
  5. Step 5: Solve for x
    x = 600,944,474.10/28,081.62
  6. Step 6: Final answer
    x = 21,399.92

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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.