Home / 12,320.11-18,482.28-3,999.91

Finding the Fourth Proportional to 12,320.11, 18,482.28 and 3,999.91

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Solution

The fourth proportional to 12,320.11, 18,482.28 and 3,999.91 is: 6,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.11 : 18,482.28 = 3,999.91 : x
  2. Step 2: Convert to fraction form
    12,320.11/18,482.28 = 3,999.91/x
  3. Step 3: Cross multiply
    12,320.11x = 18,482.28 × 3,999.91
  4. Step 4: Simplify right side
    12,320.11x = 73,927,456.59
  5. Step 5: Solve for x
    x = 73,927,456.59/12,320.11
  6. Step 6: Final answer
    x = 6,000.55

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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.