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Finding the Fourth Proportional to 21,550.40, 32,325.54 and 6,759.40

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Solution

The fourth proportional to 21,550.40, 32,325.54 and 6,759.40 is: 10,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.40 : 32,325.54 = 6,759.40 : x
  2. Step 2: Convert to fraction form
    21,550.40/32,325.54 = 6,759.40/x
  3. Step 3: Cross multiply
    21,550.40x = 32,325.54 × 6,759.40
  4. Step 4: Simplify right side
    21,550.40x = 218,501,255.08
  5. Step 5: Solve for x
    x = 218,501,255.08/21,550.40
  6. Step 6: Final answer
    x = 10,139.08

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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.