Home / 12,642.50-18,963.78-4,744.70

Finding the Fourth Proportional to 12,642.50, 18,963.78 and 4,744.70

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Solution

The fourth proportional to 12,642.50, 18,963.78 and 4,744.70 is: 7,117.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.50 : 18,963.78 = 4,744.70 : x
  2. Step 2: Convert to fraction form
    12,642.50/18,963.78 = 4,744.70/x
  3. Step 3: Cross multiply
    12,642.50x = 18,963.78 × 4,744.70
  4. Step 4: Simplify right side
    12,642.50x = 89,977,446.97
  5. Step 5: Solve for x
    x = 89,977,446.97/12,642.50
  6. Step 6: Final answer
    x = 7,117.06

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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.