Home / 28,937.12-43,408.78-9,211.06

Finding the Fourth Proportional to 28,937.12, 43,408.78 and 9,211.06

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Solution

The fourth proportional to 28,937.12, 43,408.78 and 9,211.06 is: 13,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.12 : 43,408.78 = 9,211.06 : x
  2. Step 2: Convert to fraction form
    28,937.12/43,408.78 = 9,211.06/x
  3. Step 3: Cross multiply
    28,937.12x = 43,408.78 × 9,211.06
  4. Step 4: Simplify right side
    28,937.12x = 399,840,660.06
  5. Step 5: Solve for x
    x = 399,840,660.06/28,937.12
  6. Step 6: Final answer
    x = 13,817.57

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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.