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Finding the Fourth Proportional to 39,373, 59,076.90 and 20,648.56

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Solution

The fourth proportional to 39,373, 59,076.90 and 20,648.56 is: 30,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,373 : 59,076.90 = 20,648.56 : x
  2. Step 2: Convert to fraction form
    39,373/59,076.90 = 20,648.56/x
  3. Step 3: Cross multiply
    39,373x = 59,076.90 × 20,648.56
  4. Step 4: Simplify right side
    39,373x = 1,219,852,914.26
  5. Step 5: Solve for x
    x = 1,219,852,914.26/39,373
  6. Step 6: Final answer
    x = 30,981.97

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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.