Home / 10,920.18-15,074.19-7,393.85

Finding the Fourth Proportional to 10,920.18, 15,074.19 and 7,393.85

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Solution

The fourth proportional to 10,920.18, 15,074.19 and 7,393.85 is: 10,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.18 : 15,074.19 = 7,393.85 : x
  2. Step 2: Convert to fraction form
    10,920.18/15,074.19 = 7,393.85/x
  3. Step 3: Cross multiply
    10,920.18x = 15,074.19 × 7,393.85
  4. Step 4: Simplify right side
    10,920.18x = 111,456,224.36
  5. Step 5: Solve for x
    x = 111,456,224.36/10,920.18
  6. Step 6: Final answer
    x = 10,206.45

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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.