Home / 13,555.15-20,332.76-8,879.08

Finding the Fourth Proportional to 13,555.15, 20,332.76 and 8,879.08

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Solution

The fourth proportional to 13,555.15, 20,332.76 and 8,879.08 is: 13,318.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.15 : 20,332.76 = 8,879.08 : x
  2. Step 2: Convert to fraction form
    13,555.15/20,332.76 = 8,879.08/x
  3. Step 3: Cross multiply
    13,555.15x = 20,332.76 × 8,879.08
  4. Step 4: Simplify right side
    13,555.15x = 180,536,202.66
  5. Step 5: Solve for x
    x = 180,536,202.66/13,555.15
  6. Step 6: Final answer
    x = 13,318.64

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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.