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Finding the Fourth Proportional to 10,382.60, 15,573.90 and 9,307.40

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Solution

The fourth proportional to 10,382.60, 15,573.90 and 9,307.40 is: 13,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,382.60 : 15,573.90 = 9,307.40 : x
  2. Step 2: Convert to fraction form
    10,382.60/15,573.90 = 9,307.40/x
  3. Step 3: Cross multiply
    10,382.60x = 15,573.90 × 9,307.40
  4. Step 4: Simplify right side
    10,382.60x = 144,952,516.86
  5. Step 5: Solve for x
    x = 144,952,516.86/10,382.60
  6. Step 6: Final answer
    x = 13,961.10

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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.