Home / 21,206.76-31,824.36-9,520.80

Finding the Fourth Proportional to 21,206.76, 31,824.36 and 9,520.80

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Solution

The fourth proportional to 21,206.76, 31,824.36 and 9,520.80 is: 14,287.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.76 : 31,824.36 = 9,520.80 : x
  2. Step 2: Convert to fraction form
    21,206.76/31,824.36 = 9,520.80/x
  3. Step 3: Cross multiply
    21,206.76x = 31,824.36 × 9,520.80
  4. Step 4: Simplify right side
    21,206.76x = 302,993,366.69
  5. Step 5: Solve for x
    x = 302,993,366.69/21,206.76
  6. Step 6: Final answer
    x = 14,287.58

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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.