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Finding the Fourth Proportional to 11,496.70, 15,867.51 and 6,780.70

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Solution

The fourth proportional to 11,496.70, 15,867.51 and 6,780.70 is: 9,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,496.70 : 15,867.51 = 6,780.70 : x
  2. Step 2: Convert to fraction form
    11,496.70/15,867.51 = 6,780.70/x
  3. Step 3: Cross multiply
    11,496.70x = 15,867.51 × 6,780.70
  4. Step 4: Simplify right side
    11,496.70x = 107,592,825.06
  5. Step 5: Solve for x
    x = 107,592,825.06/11,496.70
  6. Step 6: Final answer
    x = 9,358.58

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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.