Home / 12,225.90-16,872.04-6,921.52

Finding the Fourth Proportional to 12,225.90, 16,872.04 and 6,921.52

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Solution

The fourth proportional to 12,225.90, 16,872.04 and 6,921.52 is: 9,551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.90 : 16,872.04 = 6,921.52 : x
  2. Step 2: Convert to fraction form
    12,225.90/16,872.04 = 6,921.52/x
  3. Step 3: Cross multiply
    12,225.90x = 16,872.04 × 6,921.52
  4. Step 4: Simplify right side
    12,225.90x = 116,780,162.30
  5. Step 5: Solve for x
    x = 116,780,162.30/12,225.90
  6. Step 6: Final answer
    x = 9,551.87

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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.