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Finding the Fourth Proportional to 11,540.79, 15,925.14 and 7,065.81

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Solution

The fourth proportional to 11,540.79, 15,925.14 and 7,065.81 is: 9,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,540.79 : 15,925.14 = 7,065.81 : x
  2. Step 2: Convert to fraction form
    11,540.79/15,925.14 = 7,065.81/x
  3. Step 3: Cross multiply
    11,540.79x = 15,925.14 × 7,065.81
  4. Step 4: Simplify right side
    11,540.79x = 112,524,013.46
  5. Step 5: Solve for x
    x = 112,524,013.46/11,540.79
  6. Step 6: Final answer
    x = 9,750.11

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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.