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Finding the Fourth Proportional to 12,765.54, 17,616.90 and 7,101.90

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Solution

The fourth proportional to 12,765.54, 17,616.90 and 7,101.90 is: 9,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.54 : 17,616.90 = 7,101.90 : x
  2. Step 2: Convert to fraction form
    12,765.54/17,616.90 = 7,101.90/x
  3. Step 3: Cross multiply
    12,765.54x = 17,616.90 × 7,101.90
  4. Step 4: Simplify right side
    12,765.54x = 125,113,462.11
  5. Step 5: Solve for x
    x = 125,113,462.11/12,765.54
  6. Step 6: Final answer
    x = 9,800.88

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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.