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Finding the Fourth Proportional to 11,473.47, 15,826.71 and 7,217.79

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Solution

The fourth proportional to 11,473.47, 15,826.71 and 7,217.79 is: 9,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,473.47 : 15,826.71 = 7,217.79 : x
  2. Step 2: Convert to fraction form
    11,473.47/15,826.71 = 7,217.79/x
  3. Step 3: Cross multiply
    11,473.47x = 15,826.71 × 7,217.79
  4. Step 4: Simplify right side
    11,473.47x = 114,233,869.17
  5. Step 5: Solve for x
    x = 114,233,869.17/11,473.47
  6. Step 6: Final answer
    x = 9,956.35

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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.