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Finding the Fourth Proportional to 21,612.68, 32,419.02 and 5,196.68

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Solution

The fourth proportional to 21,612.68, 32,419.02 and 5,196.68 is: 7,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.68 : 32,419.02 = 5,196.68 : x
  2. Step 2: Convert to fraction form
    21,612.68/32,419.02 = 5,196.68/x
  3. Step 3: Cross multiply
    21,612.68x = 32,419.02 × 5,196.68
  4. Step 4: Simplify right side
    21,612.68x = 168,471,272.85
  5. Step 5: Solve for x
    x = 168,471,272.85/21,612.68
  6. Step 6: Final answer
    x = 7,795.02

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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.