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Finding the Fourth Proportional to 22,401.90, 30,913.02 and 13,326.75

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Solution

The fourth proportional to 22,401.90, 30,913.02 and 13,326.75 is: 18,389.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,401.90 : 30,913.02 = 13,326.75 : x
  2. Step 2: Convert to fraction form
    22,401.90/30,913.02 = 13,326.75/x
  3. Step 3: Cross multiply
    22,401.90x = 30,913.02 × 13,326.75
  4. Step 4: Simplify right side
    22,401.90x = 411,970,089.29
  5. Step 5: Solve for x
    x = 411,970,089.29/22,401.90
  6. Step 6: Final answer
    x = 18,389.96

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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.