Home / 28,408.19-42,610.68-8,685.18

Finding the Fourth Proportional to 28,408.19, 42,610.68 and 8,685.18

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Solution

The fourth proportional to 28,408.19, 42,610.68 and 8,685.18 is: 13,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.19 : 42,610.68 = 8,685.18 : x
  2. Step 2: Convert to fraction form
    28,408.19/42,610.68 = 8,685.18/x
  3. Step 3: Cross multiply
    28,408.19x = 42,610.68 × 8,685.18
  4. Step 4: Simplify right side
    28,408.19x = 370,081,425.72
  5. Step 5: Solve for x
    x = 370,081,425.72/28,408.19
  6. Step 6: Final answer
    x = 13,027.28

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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.