Home / 28,179.13-38,888.41-15,603.88

Finding the Fourth Proportional to 28,179.13, 38,888.41 and 15,603.88

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Solution

The fourth proportional to 28,179.13, 38,888.41 and 15,603.88 is: 21,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.13 : 38,888.41 = 15,603.88 : x
  2. Step 2: Convert to fraction form
    28,179.13/38,888.41 = 15,603.88/x
  3. Step 3: Cross multiply
    28,179.13x = 38,888.41 × 15,603.88
  4. Step 4: Simplify right side
    28,179.13x = 606,810,083.03
  5. Step 5: Solve for x
    x = 606,810,083.03/28,179.13
  6. Step 6: Final answer
    x = 21,534.02

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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.