Home / 12,149.60-18,228.80-4,253.28

Finding the Fourth Proportional to 12,149.60, 18,228.80 and 4,253.28

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Solution

The fourth proportional to 12,149.60, 18,228.80 and 4,253.28 is: 6,381.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.60 : 18,228.80 = 4,253.28 : x
  2. Step 2: Convert to fraction form
    12,149.60/18,228.80 = 4,253.28/x
  3. Step 3: Cross multiply
    12,149.60x = 18,228.80 × 4,253.28
  4. Step 4: Simplify right side
    12,149.60x = 77,532,190.46
  5. Step 5: Solve for x
    x = 77,532,190.46/12,149.60
  6. Step 6: Final answer
    x = 6,381.46

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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.