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Finding the Fourth Proportional to 9,720.16, 14,504.41 and 8,672.97

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Solution

The fourth proportional to 9,720.16, 14,504.41 and 8,672.97 is: 12,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.16 : 14,504.41 = 8,672.97 : x
  2. Step 2: Convert to fraction form
    9,720.16/14,504.41 = 8,672.97/x
  3. Step 3: Cross multiply
    9,720.16x = 14,504.41 × 8,672.97
  4. Step 4: Simplify right side
    9,720.16x = 125,796,312.80
  5. Step 5: Solve for x
    x = 125,796,312.80/9,720.16
  6. Step 6: Final answer
    x = 12,941.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.