Home / 28,880.80-43,313.10-9,165.40

Finding the Fourth Proportional to 28,880.80, 43,313.10 and 9,165.40

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Solution

The fourth proportional to 28,880.80, 43,313.10 and 9,165.40 is: 13,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.80 : 43,313.10 = 9,165.40 : x
  2. Step 2: Convert to fraction form
    28,880.80/43,313.10 = 9,165.40/x
  3. Step 3: Cross multiply
    28,880.80x = 43,313.10 × 9,165.40
  4. Step 4: Simplify right side
    28,880.80x = 396,981,886.74
  5. Step 5: Solve for x
    x = 396,981,886.74/28,880.80
  6. Step 6: Final answer
    x = 13,745.53

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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.