Home / 12,144.64-18,220.20-4,354.24

Finding the Fourth Proportional to 12,144.64, 18,220.20 and 4,354.24

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Solution

The fourth proportional to 12,144.64, 18,220.20 and 4,354.24 is: 6,532.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.64 : 18,220.20 = 4,354.24 : x
  2. Step 2: Convert to fraction form
    12,144.64/18,220.20 = 4,354.24/x
  3. Step 3: Cross multiply
    12,144.64x = 18,220.20 × 4,354.24
  4. Step 4: Simplify right side
    12,144.64x = 79,335,123.65
  5. Step 5: Solve for x
    x = 79,335,123.65/12,144.64
  6. Step 6: Final answer
    x = 6,532.52

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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.