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Finding the Fourth Proportional to 11,488.78, 15,854.07 and 7,459.66

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Solution

The fourth proportional to 11,488.78, 15,854.07 and 7,459.66 is: 10,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,488.78 : 15,854.07 = 7,459.66 : x
  2. Step 2: Convert to fraction form
    11,488.78/15,854.07 = 7,459.66/x
  3. Step 3: Cross multiply
    11,488.78x = 15,854.07 × 7,459.66
  4. Step 4: Simplify right side
    11,488.78x = 118,265,971.82
  5. Step 5: Solve for x
    x = 118,265,971.82/11,488.78
  6. Step 6: Final answer
    x = 10,294.04

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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.