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Finding the Fourth Proportional to 22,310.75, 30,788.54 and 12,750.53

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Solution

The fourth proportional to 22,310.75, 30,788.54 and 12,750.53 is: 17,595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,310.75 : 30,788.54 = 12,750.53 : x
  2. Step 2: Convert to fraction form
    22,310.75/30,788.54 = 12,750.53/x
  3. Step 3: Cross multiply
    22,310.75x = 30,788.54 × 12,750.53
  4. Step 4: Simplify right side
    22,310.75x = 392,570,311.77
  5. Step 5: Solve for x
    x = 392,570,311.77/22,310.75
  6. Step 6: Final answer
    x = 17,595.57

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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.