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Finding the Fourth Proportional to 38,392.82, 52,981.29 and 21,396.99

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Solution

The fourth proportional to 38,392.82, 52,981.29 and 21,396.99 is: 29,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,392.82 : 52,981.29 = 21,396.99 : x
  2. Step 2: Convert to fraction form
    38,392.82/52,981.29 = 21,396.99/x
  3. Step 3: Cross multiply
    38,392.82x = 52,981.29 × 21,396.99
  4. Step 4: Simplify right side
    38,392.82x = 1,133,640,331.00
  5. Step 5: Solve for x
    x = 1,133,640,331.00/38,392.82
  6. Step 6: Final answer
    x = 29,527.41

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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.