Home / 15,220.25-21,004.74-9,250.95

Finding the Fourth Proportional to 15,220.25, 21,004.74 and 9,250.95

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Solution

The fourth proportional to 15,220.25, 21,004.74 and 9,250.95 is: 12,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.25 : 21,004.74 = 9,250.95 : x
  2. Step 2: Convert to fraction form
    15,220.25/21,004.74 = 9,250.95/x
  3. Step 3: Cross multiply
    15,220.25x = 21,004.74 × 9,250.95
  4. Step 4: Simplify right side
    15,220.25x = 194,313,799.50
  5. Step 5: Solve for x
    x = 194,313,799.50/15,220.25
  6. Step 6: Final answer
    x = 12,766.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.