Home / 21,894.18-30,214.60-13,396.16

Finding the Fourth Proportional to 21,894.18, 30,214.60 and 13,396.16

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Solution

The fourth proportional to 21,894.18, 30,214.60 and 13,396.16 is: 18,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,894.18 : 30,214.60 = 13,396.16 : x
  2. Step 2: Convert to fraction form
    21,894.18/30,214.60 = 13,396.16/x
  3. Step 3: Cross multiply
    21,894.18x = 30,214.60 × 13,396.16
  4. Step 4: Simplify right side
    21,894.18x = 404,759,615.94
  5. Step 5: Solve for x
    x = 404,759,615.94/21,894.18
  6. Step 6: Final answer
    x = 18,487.09

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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.