Home / 13,421.82-20,042.34-10,961.52

Finding the Fourth Proportional to 13,421.82, 20,042.34 and 10,961.52

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Solution

The fourth proportional to 13,421.82, 20,042.34 and 10,961.52 is: 16,368.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.82 : 20,042.34 = 10,961.52 : x
  2. Step 2: Convert to fraction form
    13,421.82/20,042.34 = 10,961.52/x
  3. Step 3: Cross multiply
    13,421.82x = 20,042.34 × 10,961.52
  4. Step 4: Simplify right side
    13,421.82x = 219,694,510.76
  5. Step 5: Solve for x
    x = 219,694,510.76/13,421.82
  6. Step 6: Final answer
    x = 16,368.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.