Home / 21,759.06-32,640.32-9,279.19

Finding the Fourth Proportional to 21,759.06, 32,640.32 and 9,279.19

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Solution

The fourth proportional to 21,759.06, 32,640.32 and 9,279.19 is: 13,919.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.06 : 32,640.32 = 9,279.19 : x
  2. Step 2: Convert to fraction form
    21,759.06/32,640.32 = 9,279.19/x
  3. Step 3: Cross multiply
    21,759.06x = 32,640.32 × 9,279.19
  4. Step 4: Simplify right side
    21,759.06x = 302,875,806.53
  5. Step 5: Solve for x
    x = 302,875,806.53/21,759.06
  6. Step 6: Final answer
    x = 13,919.53

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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.