Home / 8,947.20-13,434.84-7,578.48

Finding the Fourth Proportional to 8,947.20, 13,434.84 and 7,578.48

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Solution

The fourth proportional to 8,947.20, 13,434.84 and 7,578.48 is: 11,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.20 : 13,434.84 = 7,578.48 : x
  2. Step 2: Convert to fraction form
    8,947.20/13,434.84 = 7,578.48/x
  3. Step 3: Cross multiply
    8,947.20x = 13,434.84 × 7,578.48
  4. Step 4: Simplify right side
    8,947.20x = 101,815,666.24
  5. Step 5: Solve for x
    x = 101,815,666.24/8,947.20
  6. Step 6: Final answer
    x = 11,379.61

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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.