Home / 13,156.10-19,734.15-12,205.70

Finding the Fourth Proportional to 13,156.10, 19,734.15 and 12,205.70

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Solution

The fourth proportional to 13,156.10, 19,734.15 and 12,205.70 is: 18,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.10 : 19,734.15 = 12,205.70 : x
  2. Step 2: Convert to fraction form
    13,156.10/19,734.15 = 12,205.70/x
  3. Step 3: Cross multiply
    13,156.10x = 19,734.15 × 12,205.70
  4. Step 4: Simplify right side
    13,156.10x = 240,869,114.66
  5. Step 5: Solve for x
    x = 240,869,114.66/13,156.10
  6. Step 6: Final answer
    x = 18,308.55

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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.