Home / 20,867.04-28,791.37-12,371.15

Finding the Fourth Proportional to 20,867.04, 28,791.37 and 12,371.15

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Solution

The fourth proportional to 20,867.04, 28,791.37 and 12,371.15 is: 17,069.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.04 : 28,791.37 = 12,371.15 : x
  2. Step 2: Convert to fraction form
    20,867.04/28,791.37 = 12,371.15/x
  3. Step 3: Cross multiply
    20,867.04x = 28,791.37 × 12,371.15
  4. Step 4: Simplify right side
    20,867.04x = 356,182,398.03
  5. Step 5: Solve for x
    x = 356,182,398.03/20,867.04
  6. Step 6: Final answer
    x = 17,069.14

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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.