Home / 28,084.55-38,756.75-15,337.76

Finding the Fourth Proportional to 28,084.55, 38,756.75 and 15,337.76

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Solution

The fourth proportional to 28,084.55, 38,756.75 and 15,337.76 is: 21,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.55 : 38,756.75 = 15,337.76 : x
  2. Step 2: Convert to fraction form
    28,084.55/38,756.75 = 15,337.76/x
  3. Step 3: Cross multiply
    28,084.55x = 38,756.75 × 15,337.76
  4. Step 4: Simplify right side
    28,084.55x = 594,441,729.88
  5. Step 5: Solve for x
    x = 594,441,729.88/28,084.55
  6. Step 6: Final answer
    x = 21,166.15

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Half scale
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Double scale
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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.