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Finding the Fourth Proportional to 15,088.88, 20,823.14 and 8,375

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Solution

The fourth proportional to 15,088.88, 20,823.14 and 8,375 is: 11,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.88 : 20,823.14 = 8,375 : x
  2. Step 2: Convert to fraction form
    15,088.88/20,823.14 = 8,375/x
  3. Step 3: Cross multiply
    15,088.88x = 20,823.14 × 8,375
  4. Step 4: Simplify right side
    15,088.88x = 174,393,797.50
  5. Step 5: Solve for x
    x = 174,393,797.50/15,088.88
  6. Step 6: Final answer
    x = 11,557.77

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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.