Home / 10,785.20-16,177.80-4,641.20

Finding the Fourth Proportional to 10,785.20, 16,177.80 and 4,641.20

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Solution

The fourth proportional to 10,785.20, 16,177.80 and 4,641.20 is: 6,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.20 : 16,177.80 = 4,641.20 : x
  2. Step 2: Convert to fraction form
    10,785.20/16,177.80 = 4,641.20/x
  3. Step 3: Cross multiply
    10,785.20x = 16,177.80 × 4,641.20
  4. Step 4: Simplify right side
    10,785.20x = 75,084,405.36
  5. Step 5: Solve for x
    x = 75,084,405.36/10,785.20
  6. Step 6: Final answer
    x = 6,961.80

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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.