Home / 21,269.99-31,909.75-6,480.07

Finding the Fourth Proportional to 21,269.99, 31,909.75 and 6,480.07

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Solution

The fourth proportional to 21,269.99, 31,909.75 and 6,480.07 is: 9,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.99 : 31,909.75 = 6,480.07 : x
  2. Step 2: Convert to fraction form
    21,269.99/31,909.75 = 6,480.07/x
  3. Step 3: Cross multiply
    21,269.99x = 31,909.75 × 6,480.07
  4. Step 4: Simplify right side
    21,269.99x = 206,777,317.71
  5. Step 5: Solve for x
    x = 206,777,317.71/21,269.99
  6. Step 6: Final answer
    x = 9,721.55

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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.