Home / 12,522.39-18,802.41-11,920.53

Finding the Fourth Proportional to 12,522.39, 18,802.41 and 11,920.53

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Solution

The fourth proportional to 12,522.39, 18,802.41 and 11,920.53 is: 17,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,522.39 : 18,802.41 = 11,920.53 : x
  2. Step 2: Convert to fraction form
    12,522.39/18,802.41 = 11,920.53/x
  3. Step 3: Cross multiply
    12,522.39x = 18,802.41 × 11,920.53
  4. Step 4: Simplify right side
    12,522.39x = 224,134,632.87
  5. Step 5: Solve for x
    x = 224,134,632.87/12,522.39
  6. Step 6: Final answer
    x = 17,898.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.