Home / 10,947.78-16,421.70-3,552.90

Finding the Fourth Proportional to 10,947.78, 16,421.70 and 3,552.90

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Solution

The fourth proportional to 10,947.78, 16,421.70 and 3,552.90 is: 5,329.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,947.78 : 16,421.70 = 3,552.90 : x
  2. Step 2: Convert to fraction form
    10,947.78/16,421.70 = 3,552.90/x
  3. Step 3: Cross multiply
    10,947.78x = 16,421.70 × 3,552.90
  4. Step 4: Simplify right side
    10,947.78x = 58,344,657.93
  5. Step 5: Solve for x
    x = 58,344,657.93/10,947.78
  6. Step 6: Final answer
    x = 5,329.36

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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.