Home / 21,131.92-31,703.15-6,341.11

Finding the Fourth Proportional to 21,131.92, 31,703.15 and 6,341.11

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Solution

The fourth proportional to 21,131.92, 31,703.15 and 6,341.11 is: 9,513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.92 : 31,703.15 = 6,341.11 : x
  2. Step 2: Convert to fraction form
    21,131.92/31,703.15 = 6,341.11/x
  3. Step 3: Cross multiply
    21,131.92x = 31,703.15 × 6,341.11
  4. Step 4: Simplify right side
    21,131.92x = 201,033,050.53
  5. Step 5: Solve for x
    x = 201,033,050.53/21,131.92
  6. Step 6: Final answer
    x = 9,513.24

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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.