Home / 28,061.25-38,724.44-15,485.91

Finding the Fourth Proportional to 28,061.25, 38,724.44 and 15,485.91

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Solution

The fourth proportional to 28,061.25, 38,724.44 and 15,485.91 is: 21,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.25 : 38,724.44 = 15,485.91 : x
  2. Step 2: Convert to fraction form
    28,061.25/38,724.44 = 15,485.91/x
  3. Step 3: Cross multiply
    28,061.25x = 38,724.44 × 15,485.91
  4. Step 4: Simplify right side
    28,061.25x = 599,683,057.10
  5. Step 5: Solve for x
    x = 599,683,057.10/28,061.25
  6. Step 6: Final answer
    x = 21,370.51

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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.