Home / 13,550.80-20,312.34-9,168.72

Finding the Fourth Proportional to 13,550.80, 20,312.34 and 9,168.72

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Solution

The fourth proportional to 13,550.80, 20,312.34 and 9,168.72 is: 13,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.80 : 20,312.34 = 9,168.72 : x
  2. Step 2: Convert to fraction form
    13,550.80/20,312.34 = 9,168.72/x
  3. Step 3: Cross multiply
    13,550.80x = 20,312.34 × 9,168.72
  4. Step 4: Simplify right side
    13,550.80x = 186,238,158.00
  5. Step 5: Solve for x
    x = 186,238,158.00/13,550.80
  6. Step 6: Final answer
    x = 13,743.70

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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.