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Finding the Fourth Proportional to 39,392.34, 54,361.59 and 21,487.73

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Solution

The fourth proportional to 39,392.34, 54,361.59 and 21,487.73 is: 29,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,392.34 : 54,361.59 = 21,487.73 : x
  2. Step 2: Convert to fraction form
    39,392.34/54,361.59 = 21,487.73/x
  3. Step 3: Cross multiply
    39,392.34x = 54,361.59 × 21,487.73
  4. Step 4: Simplify right side
    39,392.34x = 1,168,106,896.48
  5. Step 5: Solve for x
    x = 1,168,106,896.48/39,392.34
  6. Step 6: Final answer
    x = 29,653.15

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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.