Home / 28,017.58-38,665.99-15,442.30

Finding the Fourth Proportional to 28,017.58, 38,665.99 and 15,442.30

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Solution

The fourth proportional to 28,017.58, 38,665.99 and 15,442.30 is: 21,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.58 : 38,665.99 = 15,442.30 : x
  2. Step 2: Convert to fraction form
    28,017.58/38,665.99 = 15,442.30/x
  3. Step 3: Cross multiply
    28,017.58x = 38,665.99 × 15,442.30
  4. Step 4: Simplify right side
    28,017.58x = 597,091,817.38
  5. Step 5: Solve for x
    x = 597,091,817.38/28,017.58
  6. Step 6: Final answer
    x = 21,311.33

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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.