Home / 15,919.39-21,968.85-9,954.55

Finding the Fourth Proportional to 15,919.39, 21,968.85 and 9,954.55

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Solution

The fourth proportional to 15,919.39, 21,968.85 and 9,954.55 is: 13,737.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.39 : 21,968.85 = 9,954.55 : x
  2. Step 2: Convert to fraction form
    15,919.39/21,968.85 = 9,954.55/x
  3. Step 3: Cross multiply
    15,919.39x = 21,968.85 × 9,954.55
  4. Step 4: Simplify right side
    15,919.39x = 218,690,015.77
  5. Step 5: Solve for x
    x = 218,690,015.77/15,919.39
  6. Step 6: Final answer
    x = 13,737.34

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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.