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Finding the Fourth Proportional to 15,733.32, 21,711.81 and 8,659.59

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Solution

The fourth proportional to 15,733.32, 21,711.81 and 8,659.59 is: 11,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.32 : 21,711.81 = 8,659.59 : x
  2. Step 2: Convert to fraction form
    15,733.32/21,711.81 = 8,659.59/x
  3. Step 3: Cross multiply
    15,733.32x = 21,711.81 × 8,659.59
  4. Step 4: Simplify right side
    15,733.32x = 188,015,372.76
  5. Step 5: Solve for x
    x = 188,015,372.76/15,733.32
  6. Step 6: Final answer
    x = 11,950.14

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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.