Home / 20,138.19-27,781.06-14,173.17

Finding the Fourth Proportional to 20,138.19, 27,781.06 and 14,173.17

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Solution

The fourth proportional to 20,138.19, 27,781.06 and 14,173.17 is: 19,552.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.19 : 27,781.06 = 14,173.17 : x
  2. Step 2: Convert to fraction form
    20,138.19/27,781.06 = 14,173.17/x
  3. Step 3: Cross multiply
    20,138.19x = 27,781.06 × 14,173.17
  4. Step 4: Simplify right side
    20,138.19x = 393,745,686.16
  5. Step 5: Solve for x
    x = 393,745,686.16/20,138.19
  6. Step 6: Final answer
    x = 19,552.19

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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.