Home / 39,724.40-59,635.20-21,969.20

Finding the Fourth Proportional to 39,724.40, 59,635.20 and 21,969.20

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Solution

The fourth proportional to 39,724.40, 59,635.20 and 21,969.20 is: 32,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.40 : 59,635.20 = 21,969.20 : x
  2. Step 2: Convert to fraction form
    39,724.40/59,635.20 = 21,969.20/x
  3. Step 3: Cross multiply
    39,724.40x = 59,635.20 × 21,969.20
  4. Step 4: Simplify right side
    39,724.40x = 1,310,137,635.84
  5. Step 5: Solve for x
    x = 1,310,137,635.84/39,724.40
  6. Step 6: Final answer
    x = 32,980.68

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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.