Home / 30,701.19-42,344.96-21,144.11

Finding the Fourth Proportional to 30,701.19, 42,344.96 and 21,144.11

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Solution

The fourth proportional to 30,701.19, 42,344.96 and 21,144.11 is: 29,163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,701.19 : 42,344.96 = 21,144.11 : x
  2. Step 2: Convert to fraction form
    30,701.19/42,344.96 = 21,144.11/x
  3. Step 3: Cross multiply
    30,701.19x = 42,344.96 × 21,144.11
  4. Step 4: Simplify right side
    30,701.19x = 895,346,293.68
  5. Step 5: Solve for x
    x = 895,346,293.68/30,701.19
  6. Step 6: Final answer
    x = 29,163.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.