Home / 13,872.24-20,787.74-8,319.08

Finding the Fourth Proportional to 13,872.24, 20,787.74 and 8,319.08

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Solution

The fourth proportional to 13,872.24, 20,787.74 and 8,319.08 is: 12,466.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.24 : 20,787.74 = 8,319.08 : x
  2. Step 2: Convert to fraction form
    13,872.24/20,787.74 = 8,319.08/x
  3. Step 3: Cross multiply
    13,872.24x = 20,787.74 × 8,319.08
  4. Step 4: Simplify right side
    13,872.24x = 172,934,855.18
  5. Step 5: Solve for x
    x = 172,934,855.18/13,872.24
  6. Step 6: Final answer
    x = 12,466.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.