Home / 11,258.49-15,534.08-6,780.61

Finding the Fourth Proportional to 11,258.49, 15,534.08 and 6,780.61

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Solution

The fourth proportional to 11,258.49, 15,534.08 and 6,780.61 is: 9,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,258.49 : 15,534.08 = 6,780.61 : x
  2. Step 2: Convert to fraction form
    11,258.49/15,534.08 = 6,780.61/x
  3. Step 3: Cross multiply
    11,258.49x = 15,534.08 × 6,780.61
  4. Step 4: Simplify right side
    11,258.49x = 105,330,549.13
  5. Step 5: Solve for x
    x = 105,330,549.13/11,258.49
  6. Step 6: Final answer
    x = 9,355.65

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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.