Home / 10,785.07-16,178.25-3,389.80

Finding the Fourth Proportional to 10,785.07, 16,178.25 and 3,389.80

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Solution

The fourth proportional to 10,785.07, 16,178.25 and 3,389.80 is: 5,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.07 : 16,178.25 = 3,389.80 : x
  2. Step 2: Convert to fraction form
    10,785.07/16,178.25 = 3,389.80/x
  3. Step 3: Cross multiply
    10,785.07x = 16,178.25 × 3,389.80
  4. Step 4: Simplify right side
    10,785.07x = 54,841,031.85
  5. Step 5: Solve for x
    x = 54,841,031.85/10,785.07
  6. Step 6: Final answer
    x = 5,084.90

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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.