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Finding the Fourth Proportional to 13,908.77, 19,197.54 and 7,943.90

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Solution

The fourth proportional to 13,908.77, 19,197.54 and 7,943.90 is: 10,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.77 : 19,197.54 = 7,943.90 : x
  2. Step 2: Convert to fraction form
    13,908.77/19,197.54 = 7,943.90/x
  3. Step 3: Cross multiply
    13,908.77x = 19,197.54 × 7,943.90
  4. Step 4: Simplify right side
    13,908.77x = 152,503,338.01
  5. Step 5: Solve for x
    x = 152,503,338.01/13,908.77
  6. Step 6: Final answer
    x = 10,964.55

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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.