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Finding the Fourth Proportional to 21,347.56, 32,022.88 and 8,199.92

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Solution

The fourth proportional to 21,347.56, 32,022.88 and 8,199.92 is: 12,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.56 : 32,022.88 = 8,199.92 : x
  2. Step 2: Convert to fraction form
    21,347.56/32,022.88 = 8,199.92/x
  3. Step 3: Cross multiply
    21,347.56x = 32,022.88 × 8,199.92
  4. Step 4: Simplify right side
    21,347.56x = 262,585,054.17
  5. Step 5: Solve for x
    x = 262,585,054.17/21,347.56
  6. Step 6: Final answer
    x = 12,300.47

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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.