Home / 28,207.62-38,928.33-15,633.18

Finding the Fourth Proportional to 28,207.62, 38,928.33 and 15,633.18

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Solution

The fourth proportional to 28,207.62, 38,928.33 and 15,633.18 is: 21,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.62 : 38,928.33 = 15,633.18 : x
  2. Step 2: Convert to fraction form
    28,207.62/38,928.33 = 15,633.18/x
  3. Step 3: Cross multiply
    28,207.62x = 38,928.33 × 15,633.18
  4. Step 4: Simplify right side
    28,207.62x = 608,573,589.99
  5. Step 5: Solve for x
    x = 608,573,589.99/28,207.62
  6. Step 6: Final answer
    x = 21,574.79

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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.