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Finding the Fourth Proportional to 9,920.23, 13,672.87 and 9,453.10

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Solution

The fourth proportional to 9,920.23, 13,672.87 and 9,453.10 is: 13,029.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.23 : 13,672.87 = 9,453.10 : x
  2. Step 2: Convert to fraction form
    9,920.23/13,672.87 = 9,453.10/x
  3. Step 3: Cross multiply
    9,920.23x = 13,672.87 × 9,453.10
  4. Step 4: Simplify right side
    9,920.23x = 129,251,007.40
  5. Step 5: Solve for x
    x = 129,251,007.40/9,920.23
  6. Step 6: Final answer
    x = 13,029.03

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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.