Home / 19,686.38-27,167.20-11,304.50

Finding the Fourth Proportional to 19,686.38, 27,167.20 and 11,304.50

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Solution

The fourth proportional to 19,686.38, 27,167.20 and 11,304.50 is: 15,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.38 : 27,167.20 = 11,304.50 : x
  2. Step 2: Convert to fraction form
    19,686.38/27,167.20 = 11,304.50/x
  3. Step 3: Cross multiply
    19,686.38x = 27,167.20 × 11,304.50
  4. Step 4: Simplify right side
    19,686.38x = 307,111,448.30
  5. Step 5: Solve for x
    x = 307,111,448.30/19,686.38
  6. Step 6: Final answer
    x = 15,600.20

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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.