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Finding the Fourth Proportional to 15,311.84, 22,874.73 and 9,720.41

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Solution

The fourth proportional to 15,311.84, 22,874.73 and 9,720.41 is: 14,521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.84 : 22,874.73 = 9,720.41 : x
  2. Step 2: Convert to fraction form
    15,311.84/22,874.73 = 9,720.41/x
  3. Step 3: Cross multiply
    15,311.84x = 22,874.73 × 9,720.41
  4. Step 4: Simplify right side
    15,311.84x = 222,351,603.41
  5. Step 5: Solve for x
    x = 222,351,603.41/15,311.84
  6. Step 6: Final answer
    x = 14,521.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.