Home / 28,397.44-39,189.12-15,822.96

Finding the Fourth Proportional to 28,397.44, 39,189.12 and 15,822.96

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Solution

The fourth proportional to 28,397.44, 39,189.12 and 15,822.96 is: 21,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.44 : 39,189.12 = 15,822.96 : x
  2. Step 2: Convert to fraction form
    28,397.44/39,189.12 = 15,822.96/x
  3. Step 3: Cross multiply
    28,397.44x = 39,189.12 × 15,822.96
  4. Step 4: Simplify right side
    28,397.44x = 620,087,878.20
  5. Step 5: Solve for x
    x = 620,087,878.20/28,397.44
  6. Step 6: Final answer
    x = 21,836.05

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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.