Home / 13,947.28-19,242.53-7,974.70

Finding the Fourth Proportional to 13,947.28, 19,242.53 and 7,974.70

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Solution

The fourth proportional to 13,947.28, 19,242.53 and 7,974.70 is: 11,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.28 : 19,242.53 = 7,974.70 : x
  2. Step 2: Convert to fraction form
    13,947.28/19,242.53 = 7,974.70/x
  3. Step 3: Cross multiply
    13,947.28x = 19,242.53 × 7,974.70
  4. Step 4: Simplify right side
    13,947.28x = 153,453,375.82
  5. Step 5: Solve for x
    x = 153,453,375.82/13,947.28
  6. Step 6: Final answer
    x = 11,002.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.