Home / 28,930.60-43,395.90-9,211.15

Finding the Fourth Proportional to 28,930.60, 43,395.90 and 9,211.15

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Solution

The fourth proportional to 28,930.60, 43,395.90 and 9,211.15 is: 13,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.60 : 43,395.90 = 9,211.15 : x
  2. Step 2: Convert to fraction form
    28,930.60/43,395.90 = 9,211.15/x
  3. Step 3: Cross multiply
    28,930.60x = 43,395.90 × 9,211.15
  4. Step 4: Simplify right side
    28,930.60x = 399,726,144.29
  5. Step 5: Solve for x
    x = 399,726,144.29/28,930.60
  6. Step 6: Final answer
    x = 13,816.73

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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.