Home / 10,785.39-16,178.07-3,390.50

Finding the Fourth Proportional to 10,785.39, 16,178.07 and 3,390.50

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Solution

The fourth proportional to 10,785.39, 16,178.07 and 3,390.50 is: 5,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.39 : 16,178.07 = 3,390.50 : x
  2. Step 2: Convert to fraction form
    10,785.39/16,178.07 = 3,390.50/x
  3. Step 3: Cross multiply
    10,785.39x = 16,178.07 × 3,390.50
  4. Step 4: Simplify right side
    10,785.39x = 54,851,665.44
  5. Step 5: Solve for x
    x = 54,851,665.44/10,785.39
  6. Step 6: Final answer
    x = 5,085.74

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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.