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Finding the Fourth Proportional to 8,872.34, 13,230.24 and 8,436.32

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Solution

The fourth proportional to 8,872.34, 13,230.24 and 8,436.32 is: 12,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.34 : 13,230.24 = 8,436.32 : x
  2. Step 2: Convert to fraction form
    8,872.34/13,230.24 = 8,436.32/x
  3. Step 3: Cross multiply
    8,872.34x = 13,230.24 × 8,436.32
  4. Step 4: Simplify right side
    8,872.34x = 111,614,538.32
  5. Step 5: Solve for x
    x = 111,614,538.32/8,872.34
  6. Step 6: Final answer
    x = 12,580.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.