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Finding the Fourth Proportional to 22,065.69, 30,421.40 and 18,274.89

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Solution

The fourth proportional to 22,065.69, 30,421.40 and 18,274.89 is: 25,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,065.69 : 30,421.40 = 18,274.89 : x
  2. Step 2: Convert to fraction form
    22,065.69/30,421.40 = 18,274.89/x
  3. Step 3: Cross multiply
    22,065.69x = 30,421.40 × 18,274.89
  4. Step 4: Simplify right side
    22,065.69x = 555,947,647.27
  5. Step 5: Solve for x
    x = 555,947,647.27/22,065.69
  6. Step 6: Final answer
    x = 25,195.12

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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.