Home / 10,920.88-16,382.40-4,345.60

Finding the Fourth Proportional to 10,920.88, 16,382.40 and 4,345.60

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Solution

The fourth proportional to 10,920.88, 16,382.40 and 4,345.60 is: 6,518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.88 : 16,382.40 = 4,345.60 : x
  2. Step 2: Convert to fraction form
    10,920.88/16,382.40 = 4,345.60/x
  3. Step 3: Cross multiply
    10,920.88x = 16,382.40 × 4,345.60
  4. Step 4: Simplify right side
    10,920.88x = 71,191,357.44
  5. Step 5: Solve for x
    x = 71,191,357.44/10,920.88
  6. Step 6: Final answer
    x = 6,518.83

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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.