Home / 21,098.28-31,626.39-11,742.54

Finding the Fourth Proportional to 21,098.28, 31,626.39 and 11,742.54

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Solution

The fourth proportional to 21,098.28, 31,626.39 and 11,742.54 is: 17,602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.28 : 31,626.39 = 11,742.54 : x
  2. Step 2: Convert to fraction form
    21,098.28/31,626.39 = 11,742.54/x
  3. Step 3: Cross multiply
    21,098.28x = 31,626.39 × 11,742.54
  4. Step 4: Simplify right side
    21,098.28x = 371,374,149.63
  5. Step 5: Solve for x
    x = 371,374,149.63/21,098.28
  6. Step 6: Final answer
    x = 17,602.11

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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.