Home / 26,385.20-39,563.40-10,785.20

Finding the Fourth Proportional to 26,385.20, 39,563.40 and 10,785.20

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Solution

The fourth proportional to 26,385.20, 39,563.40 and 10,785.20 is: 16,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,385.20 : 39,563.40 = 10,785.20 : x
  2. Step 2: Convert to fraction form
    26,385.20/39,563.40 = 10,785.20/x
  3. Step 3: Cross multiply
    26,385.20x = 39,563.40 × 10,785.20
  4. Step 4: Simplify right side
    26,385.20x = 426,699,181.68
  5. Step 5: Solve for x
    x = 426,699,181.68/26,385.20
  6. Step 6: Final answer
    x = 16,171.91

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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.