Home / 11,278.80-15,562.12-6,560.40

Finding the Fourth Proportional to 11,278.80, 15,562.12 and 6,560.40

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Solution

The fourth proportional to 11,278.80, 15,562.12 and 6,560.40 is: 9,051.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.80 : 15,562.12 = 6,560.40 : x
  2. Step 2: Convert to fraction form
    11,278.80/15,562.12 = 6,560.40/x
  3. Step 3: Cross multiply
    11,278.80x = 15,562.12 × 6,560.40
  4. Step 4: Simplify right side
    11,278.80x = 102,093,732.05
  5. Step 5: Solve for x
    x = 102,093,732.05/11,278.80
  6. Step 6: Final answer
    x = 9,051.83

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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.