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Finding the Fourth Proportional to 21,708.95, 32,563.07 and 6,917.65

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Solution

The fourth proportional to 21,708.95, 32,563.07 and 6,917.65 is: 10,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.95 : 32,563.07 = 6,917.65 : x
  2. Step 2: Convert to fraction form
    21,708.95/32,563.07 = 6,917.65/x
  3. Step 3: Cross multiply
    21,708.95x = 32,563.07 × 6,917.65
  4. Step 4: Simplify right side
    21,708.95x = 225,259,979.18
  5. Step 5: Solve for x
    x = 225,259,979.18/21,708.95
  6. Step 6: Final answer
    x = 10,376.37

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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.