Home / 21,175.50-31,763.25-11,284.80

Finding the Fourth Proportional to 21,175.50, 31,763.25 and 11,284.80

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Solution

The fourth proportional to 21,175.50, 31,763.25 and 11,284.80 is: 16,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.50 : 31,763.25 = 11,284.80 : x
  2. Step 2: Convert to fraction form
    21,175.50/31,763.25 = 11,284.80/x
  3. Step 3: Cross multiply
    21,175.50x = 31,763.25 × 11,284.80
  4. Step 4: Simplify right side
    21,175.50x = 358,441,923.60
  5. Step 5: Solve for x
    x = 358,441,923.60/21,175.50
  6. Step 6: Final answer
    x = 16,927.20

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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.