Home / 10,785.30-16,177.98-3,390.36

Finding the Fourth Proportional to 10,785.30, 16,177.98 and 3,390.36

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Solution

The fourth proportional to 10,785.30, 16,177.98 and 3,390.36 is: 5,085.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.30 : 16,177.98 = 3,390.36 : x
  2. Step 2: Convert to fraction form
    10,785.30/16,177.98 = 3,390.36/x
  3. Step 3: Cross multiply
    10,785.30x = 16,177.98 × 3,390.36
  4. Step 4: Simplify right side
    10,785.30x = 54,849,176.27
  5. Step 5: Solve for x
    x = 54,849,176.27/10,785.30
  6. Step 6: Final answer
    x = 5,085.55

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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.