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Finding the Fourth Proportional to 15,961.16, 22,030.92 and 9,589.78

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Solution

The fourth proportional to 15,961.16, 22,030.92 and 9,589.78 is: 13,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.16 : 22,030.92 = 9,589.78 : x
  2. Step 2: Convert to fraction form
    15,961.16/22,030.92 = 9,589.78/x
  3. Step 3: Cross multiply
    15,961.16x = 22,030.92 × 9,589.78
  4. Step 4: Simplify right side
    15,961.16x = 211,271,676.00
  5. Step 5: Solve for x
    x = 211,271,676.00/15,961.16
  6. Step 6: Final answer
    x = 13,236.61

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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.