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Finding the Fourth Proportional to 22,369.98, 30,868.08 and 13,417.86

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Solution

The fourth proportional to 22,369.98, 30,868.08 and 13,417.86 is: 18,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,369.98 : 30,868.08 = 13,417.86 : x
  2. Step 2: Convert to fraction form
    22,369.98/30,868.08 = 13,417.86/x
  3. Step 3: Cross multiply
    22,369.98x = 30,868.08 × 13,417.86
  4. Step 4: Simplify right side
    22,369.98x = 414,183,575.91
  5. Step 5: Solve for x
    x = 414,183,575.91/22,369.98
  6. Step 6: Final answer
    x = 18,515.15

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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.