Home / 12,211.70-18,304.76-5,642.18

Finding the Fourth Proportional to 12,211.70, 18,304.76 and 5,642.18

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Solution

The fourth proportional to 12,211.70, 18,304.76 and 5,642.18 is: 8,457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.70 : 18,304.76 = 5,642.18 : x
  2. Step 2: Convert to fraction form
    12,211.70/18,304.76 = 5,642.18/x
  3. Step 3: Cross multiply
    12,211.70x = 18,304.76 × 5,642.18
  4. Step 4: Simplify right side
    12,211.70x = 103,278,750.78
  5. Step 5: Solve for x
    x = 103,278,750.78/12,211.70
  6. Step 6: Final answer
    x = 8,457.36

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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.