Home / 28,115.06-42,181.23-9,648.50

Finding the Fourth Proportional to 28,115.06, 42,181.23 and 9,648.50

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Solution

The fourth proportional to 28,115.06, 42,181.23 and 9,648.50 is: 14,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.06 : 42,181.23 = 9,648.50 : x
  2. Step 2: Convert to fraction form
    28,115.06/42,181.23 = 9,648.50/x
  3. Step 3: Cross multiply
    28,115.06x = 42,181.23 × 9,648.50
  4. Step 4: Simplify right side
    28,115.06x = 406,985,597.66
  5. Step 5: Solve for x
    x = 406,985,597.66/28,115.06
  6. Step 6: Final answer
    x = 14,475.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.