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Finding the Fourth Proportional to 10,146.71, 15,220.08 and 2,751.20

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Solution

The fourth proportional to 10,146.71, 15,220.08 and 2,751.20 is: 4,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,146.71 : 15,220.08 = 2,751.20 : x
  2. Step 2: Convert to fraction form
    10,146.71/15,220.08 = 2,751.20/x
  3. Step 3: Cross multiply
    10,146.71x = 15,220.08 × 2,751.20
  4. Step 4: Simplify right side
    10,146.71x = 41,873,484.10
  5. Step 5: Solve for x
    x = 41,873,484.10/10,146.71
  6. Step 6: Final answer
    x = 4,126.80

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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.