Home / 12,520.20-18,780.70-5,943

Finding the Fourth Proportional to 12,520.20, 18,780.70 and 5,943

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Solution

The fourth proportional to 12,520.20, 18,780.70 and 5,943 is: 8,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.20 : 18,780.70 = 5,943 : x
  2. Step 2: Convert to fraction form
    12,520.20/18,780.70 = 5,943/x
  3. Step 3: Cross multiply
    12,520.20x = 18,780.70 × 5,943
  4. Step 4: Simplify right side
    12,520.20x = 111,613,700.10
  5. Step 5: Solve for x
    x = 111,613,700.10/12,520.20
  6. Step 6: Final answer
    x = 8,914.69

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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.