Home / 28,017.72-38,661.84-15,442.38

Finding the Fourth Proportional to 28,017.72, 38,661.84 and 15,442.38

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Solution

The fourth proportional to 28,017.72, 38,661.84 and 15,442.38 is: 21,309.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.72 : 38,661.84 = 15,442.38 : x
  2. Step 2: Convert to fraction form
    28,017.72/38,661.84 = 15,442.38/x
  3. Step 3: Cross multiply
    28,017.72x = 38,661.84 × 15,442.38
  4. Step 4: Simplify right side
    28,017.72x = 597,030,824.78
  5. Step 5: Solve for x
    x = 597,030,824.78/28,017.72
  6. Step 6: Final answer
    x = 21,309.04

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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.