Home / 39,984.32-59,976.54-13,689.29

Finding the Fourth Proportional to 39,984.32, 59,976.54 and 13,689.29

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Solution

The fourth proportional to 39,984.32, 59,976.54 and 13,689.29 is: 20,533.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,984.32 : 59,976.54 = 13,689.29 : x
  2. Step 2: Convert to fraction form
    39,984.32/59,976.54 = 13,689.29/x
  3. Step 3: Cross multiply
    39,984.32x = 59,976.54 × 13,689.29
  4. Step 4: Simplify right side
    39,984.32x = 821,035,949.37
  5. Step 5: Solve for x
    x = 821,035,949.37/39,984.32
  6. Step 6: Final answer
    x = 20,533.95

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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.