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Finding the Fourth Proportional to 22,393.87, 30,885.39 and 13,890.08

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Solution

The fourth proportional to 22,393.87, 30,885.39 and 13,890.08 is: 19,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,393.87 : 30,885.39 = 13,890.08 : x
  2. Step 2: Convert to fraction form
    22,393.87/30,885.39 = 13,890.08/x
  3. Step 3: Cross multiply
    22,393.87x = 30,885.39 × 13,890.08
  4. Step 4: Simplify right side
    22,393.87x = 429,000,615.14
  5. Step 5: Solve for x
    x = 429,000,615.14/22,393.87
  6. Step 6: Final answer
    x = 19,157.06

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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.