Home / 19,991.20-27,587.28-11,038.04

Finding the Fourth Proportional to 19,991.20, 27,587.28 and 11,038.04

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Solution

The fourth proportional to 19,991.20, 27,587.28 and 11,038.04 is: 15,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.20 : 27,587.28 = 11,038.04 : x
  2. Step 2: Convert to fraction form
    19,991.20/27,587.28 = 11,038.04/x
  3. Step 3: Cross multiply
    19,991.20x = 27,587.28 × 11,038.04
  4. Step 4: Simplify right side
    19,991.20x = 304,509,500.13
  5. Step 5: Solve for x
    x = 304,509,500.13/19,991.20
  6. Step 6: Final answer
    x = 15,232.18

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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.