Home / 28,796.76-39,724.38-19,828.71

Finding the Fourth Proportional to 28,796.76, 39,724.38 and 19,828.71

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Solution

The fourth proportional to 28,796.76, 39,724.38 and 19,828.71 is: 27,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,796.76 : 39,724.38 = 19,828.71 : x
  2. Step 2: Convert to fraction form
    28,796.76/39,724.38 = 19,828.71/x
  3. Step 3: Cross multiply
    28,796.76x = 39,724.38 × 19,828.71
  4. Step 4: Simplify right side
    28,796.76x = 787,683,210.95
  5. Step 5: Solve for x
    x = 787,683,210.95/28,796.76
  6. Step 6: Final answer
    x = 27,353.19

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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.