Home / 15,522.84-21,422.07-8,808.75

Finding the Fourth Proportional to 15,522.84, 21,422.07 and 8,808.75

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Solution

The fourth proportional to 15,522.84, 21,422.07 and 8,808.75 is: 12,156.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.84 : 21,422.07 = 8,808.75 : x
  2. Step 2: Convert to fraction form
    15,522.84/21,422.07 = 8,808.75/x
  3. Step 3: Cross multiply
    15,522.84x = 21,422.07 × 8,808.75
  4. Step 4: Simplify right side
    15,522.84x = 188,701,659.11
  5. Step 5: Solve for x
    x = 188,701,659.11/15,522.84
  6. Step 6: Final answer
    x = 12,156.39

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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.