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Finding the Fourth Proportional to 11,394.66, 15,731.95 and 7,151.55

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Solution

The fourth proportional to 11,394.66, 15,731.95 and 7,151.55 is: 9,873.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.66 : 15,731.95 = 7,151.55 : x
  2. Step 2: Convert to fraction form
    11,394.66/15,731.95 = 7,151.55/x
  3. Step 3: Cross multiply
    11,394.66x = 15,731.95 × 7,151.55
  4. Step 4: Simplify right side
    11,394.66x = 112,507,827.02
  5. Step 5: Solve for x
    x = 112,507,827.02/11,394.66
  6. Step 6: Final answer
    x = 9,873.73

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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.