Home / 19,908.42-29,862.63-8,208.78

Finding the Fourth Proportional to 19,908.42, 29,862.63 and 8,208.78

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Solution

The fourth proportional to 19,908.42, 29,862.63 and 8,208.78 is: 12,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.42 : 29,862.63 = 8,208.78 : x
  2. Step 2: Convert to fraction form
    19,908.42/29,862.63 = 8,208.78/x
  3. Step 3: Cross multiply
    19,908.42x = 29,862.63 × 8,208.78
  4. Step 4: Simplify right side
    19,908.42x = 245,135,759.89
  5. Step 5: Solve for x
    x = 245,135,759.89/19,908.42
  6. Step 6: Final answer
    x = 12,313.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.