Home / 22,021.24-30,389.28-12,590

Finding the Fourth Proportional to 22,021.24, 30,389.28 and 12,590

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Solution

The fourth proportional to 22,021.24, 30,389.28 and 12,590 is: 17,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021.24 : 30,389.28 = 12,590 : x
  2. Step 2: Convert to fraction form
    22,021.24/30,389.28 = 12,590/x
  3. Step 3: Cross multiply
    22,021.24x = 30,389.28 × 12,590
  4. Step 4: Simplify right side
    22,021.24x = 382,601,035.20
  5. Step 5: Solve for x
    x = 382,601,035.20/22,021.24
  6. Step 6: Final answer
    x = 17,374.18

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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.