Home / 12,152.88-18,215.10-5,579.70

Finding the Fourth Proportional to 12,152.88, 18,215.10 and 5,579.70

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Solution

The fourth proportional to 12,152.88, 18,215.10 and 5,579.70 is: 8,363.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,152.88 : 18,215.10 = 5,579.70 : x
  2. Step 2: Convert to fraction form
    12,152.88/18,215.10 = 5,579.70/x
  3. Step 3: Cross multiply
    12,152.88x = 18,215.10 × 5,579.70
  4. Step 4: Simplify right side
    12,152.88x = 101,634,793.47
  5. Step 5: Solve for x
    x = 101,634,793.47/12,152.88
  6. Step 6: Final answer
    x = 8,363.02

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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.