Home / 28,063.20-38,727.78-15,487.92

Finding the Fourth Proportional to 28,063.20, 38,727.78 and 15,487.92

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Solution

The fourth proportional to 28,063.20, 38,727.78 and 15,487.92 is: 21,373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.20 : 38,727.78 = 15,487.92 : x
  2. Step 2: Convert to fraction form
    28,063.20/38,727.78 = 15,487.92/x
  3. Step 3: Cross multiply
    28,063.20x = 38,727.78 × 15,487.92
  4. Step 4: Simplify right side
    28,063.20x = 599,812,758.42
  5. Step 5: Solve for x
    x = 599,812,758.42/28,063.20
  6. Step 6: Final answer
    x = 21,373.64

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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.