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Finding the Fourth Proportional to 10,101.78, 15,132.15 and 7,477.11

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Solution

The fourth proportional to 10,101.78, 15,132.15 and 7,477.11 is: 11,200.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.78 : 15,132.15 = 7,477.11 : x
  2. Step 2: Convert to fraction form
    10,101.78/15,132.15 = 7,477.11/x
  3. Step 3: Cross multiply
    10,101.78x = 15,132.15 × 7,477.11
  4. Step 4: Simplify right side
    10,101.78x = 113,144,750.09
  5. Step 5: Solve for x
    x = 113,144,750.09/10,101.78
  6. Step 6: Final answer
    x = 11,200.48

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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.