Home / 13,434.40-20,143.56-5,530.80

Finding the Fourth Proportional to 13,434.40, 20,143.56 and 5,530.80

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Solution

The fourth proportional to 13,434.40, 20,143.56 and 5,530.80 is: 8,292.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.40 : 20,143.56 = 5,530.80 : x
  2. Step 2: Convert to fraction form
    13,434.40/20,143.56 = 5,530.80/x
  3. Step 3: Cross multiply
    13,434.40x = 20,143.56 × 5,530.80
  4. Step 4: Simplify right side
    13,434.40x = 111,410,001.65
  5. Step 5: Solve for x
    x = 111,410,001.65/13,434.40
  6. Step 6: Final answer
    x = 8,292.89

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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.