Home / 12,761.58-19,140.85-3,402.30

Finding the Fourth Proportional to 12,761.58, 19,140.85 and 3,402.30

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Solution

The fourth proportional to 12,761.58, 19,140.85 and 3,402.30 is: 5,103.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.58 : 19,140.85 = 3,402.30 : x
  2. Step 2: Convert to fraction form
    12,761.58/19,140.85 = 3,402.30/x
  3. Step 3: Cross multiply
    12,761.58x = 19,140.85 × 3,402.30
  4. Step 4: Simplify right side
    12,761.58x = 65,122,913.96
  5. Step 5: Solve for x
    x = 65,122,913.96/12,761.58
  6. Step 6: Final answer
    x = 5,103.04

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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.