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Finding the Fourth Proportional to 9,329.88, 12,884.76 and 8,530.14

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Solution

The fourth proportional to 9,329.88, 12,884.76 and 8,530.14 is: 11,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,329.88 : 12,884.76 = 8,530.14 : x
  2. Step 2: Convert to fraction form
    9,329.88/12,884.76 = 8,530.14/x
  3. Step 3: Cross multiply
    9,329.88x = 12,884.76 × 8,530.14
  4. Step 4: Simplify right side
    9,329.88x = 109,908,806.67
  5. Step 5: Solve for x
    x = 109,908,806.67/9,329.88
  6. Step 6: Final answer
    x = 11,780.30

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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.