Home / 19,638.38-27,100.93-11,142.17

Finding the Fourth Proportional to 19,638.38, 27,100.93 and 11,142.17

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Solution

The fourth proportional to 19,638.38, 27,100.93 and 11,142.17 is: 15,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.38 : 27,100.93 = 11,142.17 : x
  2. Step 2: Convert to fraction form
    19,638.38/27,100.93 = 11,142.17/x
  3. Step 3: Cross multiply
    19,638.38x = 27,100.93 × 11,142.17
  4. Step 4: Simplify right side
    19,638.38x = 301,963,169.22
  5. Step 5: Solve for x
    x = 301,963,169.22/19,638.38
  6. Step 6: Final answer
    x = 15,376.18

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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.