Home / 15,219.41-21,002.76-8,505.05

Finding the Fourth Proportional to 15,219.41, 21,002.76 and 8,505.05

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Solution

The fourth proportional to 15,219.41, 21,002.76 and 8,505.05 is: 11,736.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.41 : 21,002.76 = 8,505.05 : x
  2. Step 2: Convert to fraction form
    15,219.41/21,002.76 = 8,505.05/x
  3. Step 3: Cross multiply
    15,219.41x = 21,002.76 × 8,505.05
  4. Step 4: Simplify right side
    15,219.41x = 178,629,418.92
  5. Step 5: Solve for x
    x = 178,629,418.92/15,219.41
  6. Step 6: Final answer
    x = 11,736.95

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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.