Home / 20,488.36-30,706.52-9,960.80

Finding the Fourth Proportional to 20,488.36, 30,706.52 and 9,960.80

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Solution

The fourth proportional to 20,488.36, 30,706.52 and 9,960.80 is: 14,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.36 : 30,706.52 = 9,960.80 : x
  2. Step 2: Convert to fraction form
    20,488.36/30,706.52 = 9,960.80/x
  3. Step 3: Cross multiply
    20,488.36x = 30,706.52 × 9,960.80
  4. Step 4: Simplify right side
    20,488.36x = 305,861,504.42
  5. Step 5: Solve for x
    x = 305,861,504.42/20,488.36
  6. Step 6: Final answer
    x = 14,928.55

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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.