Home / 11,120.40-15,346.12-6,646.76

Finding the Fourth Proportional to 11,120.40, 15,346.12 and 6,646.76

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Solution

The fourth proportional to 11,120.40, 15,346.12 and 6,646.76 is: 9,172.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.40 : 15,346.12 = 6,646.76 : x
  2. Step 2: Convert to fraction form
    11,120.40/15,346.12 = 6,646.76/x
  3. Step 3: Cross multiply
    11,120.40x = 15,346.12 × 6,646.76
  4. Step 4: Simplify right side
    11,120.40x = 102,001,976.57
  5. Step 5: Solve for x
    x = 102,001,976.57/11,120.40
  6. Step 6: Final answer
    x = 9,172.51

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Double scale
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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.