Home / 39,871.28-59,694.48-21,108.80

Finding the Fourth Proportional to 39,871.28, 59,694.48 and 21,108.80

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Solution

The fourth proportional to 39,871.28, 59,694.48 and 21,108.80 is: 31,603.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.28 : 59,694.48 = 21,108.80 : x
  2. Step 2: Convert to fraction form
    39,871.28/59,694.48 = 21,108.80/x
  3. Step 3: Cross multiply
    39,871.28x = 59,694.48 × 21,108.80
  4. Step 4: Simplify right side
    39,871.28x = 1,260,078,839.42
  5. Step 5: Solve for x
    x = 1,260,078,839.42/39,871.28
  6. Step 6: Final answer
    x = 31,603.67

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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.