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Finding the Fourth Proportional to 9,910.98, 13,672.67 and 7,924.32

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Solution

The fourth proportional to 9,910.98, 13,672.67 and 7,924.32 is: 10,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,910.98 : 13,672.67 = 7,924.32 : x
  2. Step 2: Convert to fraction form
    9,910.98/13,672.67 = 7,924.32/x
  3. Step 3: Cross multiply
    9,910.98x = 13,672.67 × 7,924.32
  4. Step 4: Simplify right side
    9,910.98x = 108,346,572.71
  5. Step 5: Solve for x
    x = 108,346,572.71/9,910.98
  6. Step 6: Final answer
    x = 10,931.97

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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.