Home / 15,522.22-21,425.46-8,812.30

Finding the Fourth Proportional to 15,522.22, 21,425.46 and 8,812.30

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Solution

The fourth proportional to 15,522.22, 21,425.46 and 8,812.30 is: 12,163.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.22 : 21,425.46 = 8,812.30 : x
  2. Step 2: Convert to fraction form
    15,522.22/21,425.46 = 8,812.30/x
  3. Step 3: Cross multiply
    15,522.22x = 21,425.46 × 8,812.30
  4. Step 4: Simplify right side
    15,522.22x = 188,807,581.16
  5. Step 5: Solve for x
    x = 188,807,581.16/15,522.22
  6. Step 6: Final answer
    x = 12,163.70

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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.