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Finding the Fourth Proportional to 11,305.80, 15,609.72 and 7,063.32

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Solution

The fourth proportional to 11,305.80, 15,609.72 and 7,063.32 is: 9,752.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305.80 : 15,609.72 = 7,063.32 : x
  2. Step 2: Convert to fraction form
    11,305.80/15,609.72 = 7,063.32/x
  3. Step 3: Cross multiply
    11,305.80x = 15,609.72 × 7,063.32
  4. Step 4: Simplify right side
    11,305.80x = 110,256,447.47
  5. Step 5: Solve for x
    x = 110,256,447.47/11,305.80
  6. Step 6: Final answer
    x = 9,752.20

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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.