Home / 28,864.80-43,289.10-9,149.40

Finding the Fourth Proportional to 28,864.80, 43,289.10 and 9,149.40

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Solution

The fourth proportional to 28,864.80, 43,289.10 and 9,149.40 is: 13,721.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864.80 : 43,289.10 = 9,149.40 : x
  2. Step 2: Convert to fraction form
    28,864.80/43,289.10 = 9,149.40/x
  3. Step 3: Cross multiply
    28,864.80x = 43,289.10 × 9,149.40
  4. Step 4: Simplify right side
    28,864.80x = 396,069,291.54
  5. Step 5: Solve for x
    x = 396,069,291.54/28,864.80
  6. Step 6: Final answer
    x = 13,721.53

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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.