Home / 21,328.71-31,991.91-6,537.69

Finding the Fourth Proportional to 21,328.71, 31,991.91 and 6,537.69

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Solution

The fourth proportional to 21,328.71, 31,991.91 and 6,537.69 is: 9,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.71 : 31,991.91 = 6,537.69 : x
  2. Step 2: Convert to fraction form
    21,328.71/31,991.91 = 6,537.69/x
  3. Step 3: Cross multiply
    21,328.71x = 31,991.91 × 6,537.69
  4. Step 4: Simplify right side
    21,328.71x = 209,153,190.09
  5. Step 5: Solve for x
    x = 209,153,190.09/21,328.71
  6. Step 6: Final answer
    x = 9,806.18

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1.5x scale

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.