Home / 12,180.04-18,270.18-4,282.20

Finding the Fourth Proportional to 12,180.04, 18,270.18 and 4,282.20

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Solution

The fourth proportional to 12,180.04, 18,270.18 and 4,282.20 is: 6,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.04 : 18,270.18 = 4,282.20 : x
  2. Step 2: Convert to fraction form
    12,180.04/18,270.18 = 4,282.20/x
  3. Step 3: Cross multiply
    12,180.04x = 18,270.18 × 4,282.20
  4. Step 4: Simplify right side
    12,180.04x = 78,236,564.80
  5. Step 5: Solve for x
    x = 78,236,564.80/12,180.04
  6. Step 6: Final answer
    x = 6,423.34

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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.