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Finding the Fourth Proportional to 10,147.95, 15,221.93 and 4,302.99

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Solution

The fourth proportional to 10,147.95, 15,221.93 and 4,302.99 is: 6,454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.95 : 15,221.93 = 4,302.99 : x
  2. Step 2: Convert to fraction form
    10,147.95/15,221.93 = 4,302.99/x
  3. Step 3: Cross multiply
    10,147.95x = 15,221.93 × 4,302.99
  4. Step 4: Simplify right side
    10,147.95x = 65,499,791.06
  5. Step 5: Solve for x
    x = 65,499,791.06/10,147.95
  6. Step 6: Final answer
    x = 6,454.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.