Home / 10,921.80-15,073.38-6,894.48

Finding the Fourth Proportional to 10,921.80, 15,073.38 and 6,894.48

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Solution

The fourth proportional to 10,921.80, 15,073.38 and 6,894.48 is: 9,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.80 : 15,073.38 = 6,894.48 : x
  2. Step 2: Convert to fraction form
    10,921.80/15,073.38 = 6,894.48/x
  3. Step 3: Cross multiply
    10,921.80x = 15,073.38 × 6,894.48
  4. Step 4: Simplify right side
    10,921.80x = 103,923,116.94
  5. Step 5: Solve for x
    x = 103,923,116.94/10,921.80
  6. Step 6: Final answer
    x = 9,515.20

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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.