Home / 13,918.20-19,202.38-7,945.57

Finding the Fourth Proportional to 13,918.20, 19,202.38 and 7,945.57

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Solution

The fourth proportional to 13,918.20, 19,202.38 and 7,945.57 is: 10,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.20 : 19,202.38 = 7,945.57 : x
  2. Step 2: Convert to fraction form
    13,918.20/19,202.38 = 7,945.57/x
  3. Step 3: Cross multiply
    13,918.20x = 19,202.38 × 7,945.57
  4. Step 4: Simplify right side
    13,918.20x = 152,573,854.46
  5. Step 5: Solve for x
    x = 152,573,854.46/13,918.20
  6. Step 6: Final answer
    x = 10,962.18

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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.