Home / 13,260.80-18,280.56-9,269.48

Finding the Fourth Proportional to 13,260.80, 18,280.56 and 9,269.48

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Solution

The fourth proportional to 13,260.80, 18,280.56 and 9,269.48 is: 12,778.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.80 : 18,280.56 = 9,269.48 : x
  2. Step 2: Convert to fraction form
    13,260.80/18,280.56 = 9,269.48/x
  3. Step 3: Cross multiply
    13,260.80x = 18,280.56 × 9,269.48
  4. Step 4: Simplify right side
    13,260.80x = 169,451,285.31
  5. Step 5: Solve for x
    x = 169,451,285.31/13,260.80
  6. Step 6: Final answer
    x = 12,778.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.