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Finding the Fourth Proportional to 15,963.64, 22,029.84 and 8,890.06

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Solution

The fourth proportional to 15,963.64, 22,029.84 and 8,890.06 is: 12,268.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,963.64 : 22,029.84 = 8,890.06 : x
  2. Step 2: Convert to fraction form
    15,963.64/22,029.84 = 8,890.06/x
  3. Step 3: Cross multiply
    15,963.64x = 22,029.84 × 8,890.06
  4. Step 4: Simplify right side
    15,963.64x = 195,846,599.39
  5. Step 5: Solve for x
    x = 195,846,599.39/15,963.64
  6. Step 6: Final answer
    x = 12,268.29

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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.