Home / 28,126.98-42,181.97-9,402.21

Finding the Fourth Proportional to 28,126.98, 42,181.97 and 9,402.21

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Solution

The fourth proportional to 28,126.98, 42,181.97 and 9,402.21 is: 14,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.98 : 42,181.97 = 9,402.21 : x
  2. Step 2: Convert to fraction form
    28,126.98/42,181.97 = 9,402.21/x
  3. Step 3: Cross multiply
    28,126.98x = 42,181.97 × 9,402.21
  4. Step 4: Simplify right side
    28,126.98x = 396,603,693.14
  5. Step 5: Solve for x
    x = 396,603,693.14/28,126.98
  6. Step 6: Final answer
    x = 14,100.47

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1.5x scale

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.