Home / 25,928.90-38,902.91-20,977.16

Finding the Fourth Proportional to 25,928.90, 38,902.91 and 20,977.16

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Solution

The fourth proportional to 25,928.90, 38,902.91 and 20,977.16 is: 31,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,928.90 : 38,902.91 = 20,977.16 : x
  2. Step 2: Convert to fraction form
    25,928.90/38,902.91 = 20,977.16/x
  3. Step 3: Cross multiply
    25,928.90x = 38,902.91 × 20,977.16
  4. Step 4: Simplify right side
    25,928.90x = 816,072,268.14
  5. Step 5: Solve for x
    x = 816,072,268.14/25,928.90
  6. Step 6: Final answer
    x = 31,473.47

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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.