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Finding the Fourth Proportional to 11,394.43, 15,722.42 and 7,611.53

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Solution

The fourth proportional to 11,394.43, 15,722.42 and 7,611.53 is: 10,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.43 : 15,722.42 = 7,611.53 : x
  2. Step 2: Convert to fraction form
    11,394.43/15,722.42 = 7,611.53/x
  3. Step 3: Cross multiply
    11,394.43x = 15,722.42 × 7,611.53
  4. Step 4: Simplify right side
    11,394.43x = 119,671,671.50
  5. Step 5: Solve for x
    x = 119,671,671.50/11,394.43
  6. Step 6: Final answer
    x = 10,502.65

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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.