Home / 22,453.05-30,985.43-12,381.90

Finding the Fourth Proportional to 22,453.05, 30,985.43 and 12,381.90

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Solution

The fourth proportional to 22,453.05, 30,985.43 and 12,381.90 is: 17,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,453.05 : 30,985.43 = 12,381.90 : x
  2. Step 2: Convert to fraction form
    22,453.05/30,985.43 = 12,381.90/x
  3. Step 3: Cross multiply
    22,453.05x = 30,985.43 × 12,381.90
  4. Step 4: Simplify right side
    22,453.05x = 383,658,433.81
  5. Step 5: Solve for x
    x = 383,658,433.81/22,453.05
  6. Step 6: Final answer
    x = 17,087.14

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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.