Home / 28,856.10-43,288.20-9,132.60

Finding the Fourth Proportional to 28,856.10, 43,288.20 and 9,132.60

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Solution

The fourth proportional to 28,856.10, 43,288.20 and 9,132.60 is: 13,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.10 : 43,288.20 = 9,132.60 : x
  2. Step 2: Convert to fraction form
    28,856.10/43,288.20 = 9,132.60/x
  3. Step 3: Cross multiply
    28,856.10x = 43,288.20 × 9,132.60
  4. Step 4: Simplify right side
    28,856.10x = 395,333,815.32
  5. Step 5: Solve for x
    x = 395,333,815.32/28,856.10
  6. Step 6: Final answer
    x = 13,700.18

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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.