Home / 13,015.11-19,542.11-12,820.71

Finding the Fourth Proportional to 13,015.11, 19,542.11 and 12,820.71

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Solution

The fourth proportional to 13,015.11, 19,542.11 and 12,820.71 is: 19,250.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.11 : 19,542.11 = 12,820.71 : x
  2. Step 2: Convert to fraction form
    13,015.11/19,542.11 = 12,820.71/x
  3. Step 3: Cross multiply
    13,015.11x = 19,542.11 × 12,820.71
  4. Step 4: Simplify right side
    13,015.11x = 250,543,725.10
  5. Step 5: Solve for x
    x = 250,543,725.10/13,015.11
  6. Step 6: Final answer
    x = 19,250.22

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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.