Home / 21,028.01-29,022-12,530.57

Finding the Fourth Proportional to 21,028.01, 29,022 and 12,530.57

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Solution

The fourth proportional to 21,028.01, 29,022 and 12,530.57 is: 17,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.01 : 29,022 = 12,530.57 : x
  2. Step 2: Convert to fraction form
    21,028.01/29,022 = 12,530.57/x
  3. Step 3: Cross multiply
    21,028.01x = 29,022 × 12,530.57
  4. Step 4: Simplify right side
    21,028.01x = 363,662,202.54
  5. Step 5: Solve for x
    x = 363,662,202.54/21,028.01
  6. Step 6: Final answer
    x = 17,294.18

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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.