Home / 13,429.32-18,524.88-8,122.20

Finding the Fourth Proportional to 13,429.32, 18,524.88 and 8,122.20

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Solution

The fourth proportional to 13,429.32, 18,524.88 and 8,122.20 is: 11,204.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.32 : 18,524.88 = 8,122.20 : x
  2. Step 2: Convert to fraction form
    13,429.32/18,524.88 = 8,122.20/x
  3. Step 3: Cross multiply
    13,429.32x = 18,524.88 × 8,122.20
  4. Step 4: Simplify right side
    13,429.32x = 150,462,780.34
  5. Step 5: Solve for x
    x = 150,462,780.34/13,429.32
  6. Step 6: Final answer
    x = 11,204.05

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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.