Home / 21,077.20-31,617.93-6,845.08

Finding the Fourth Proportional to 21,077.20, 31,617.93 and 6,845.08

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Solution

The fourth proportional to 21,077.20, 31,617.93 and 6,845.08 is: 10,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.20 : 31,617.93 = 6,845.08 : x
  2. Step 2: Convert to fraction form
    21,077.20/31,617.93 = 6,845.08/x
  3. Step 3: Cross multiply
    21,077.20x = 31,617.93 × 6,845.08
  4. Step 4: Simplify right side
    21,077.20x = 216,427,260.28
  5. Step 5: Solve for x
    x = 216,427,260.28/21,077.20
  6. Step 6: Final answer
    x = 10,268.31

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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.