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Finding the Fourth Proportional to 15,961.32, 22,028.02 and 8,889.08

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Solution

The fourth proportional to 15,961.32, 22,028.02 and 8,889.08 is: 12,267.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.32 : 22,028.02 = 8,889.08 : x
  2. Step 2: Convert to fraction form
    15,961.32/22,028.02 = 8,889.08/x
  3. Step 3: Cross multiply
    15,961.32x = 22,028.02 × 8,889.08
  4. Step 4: Simplify right side
    15,961.32x = 195,808,699.66
  5. Step 5: Solve for x
    x = 195,808,699.66/15,961.32
  6. Step 6: Final answer
    x = 12,267.70

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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.