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Finding the Fourth Proportional to 15,335.62, 21,163.05 and 8,711.62

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Solution

The fourth proportional to 15,335.62, 21,163.05 and 8,711.62 is: 12,021.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.62 : 21,163.05 = 8,711.62 : x
  2. Step 2: Convert to fraction form
    15,335.62/21,163.05 = 8,711.62/x
  3. Step 3: Cross multiply
    15,335.62x = 21,163.05 × 8,711.62
  4. Step 4: Simplify right side
    15,335.62x = 184,364,449.64
  5. Step 5: Solve for x
    x = 184,364,449.64/15,335.62
  6. Step 6: Final answer
    x = 12,021.98

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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.