Home / 21,633.68-32,438.64-13,316.78

Finding the Fourth Proportional to 21,633.68, 32,438.64 and 13,316.78

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Solution

The fourth proportional to 21,633.68, 32,438.64 and 13,316.78 is: 19,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.68 : 32,438.64 = 13,316.78 : x
  2. Step 2: Convert to fraction form
    21,633.68/32,438.64 = 13,316.78/x
  3. Step 3: Cross multiply
    21,633.68x = 32,438.64 × 13,316.78
  4. Step 4: Simplify right side
    21,633.68x = 431,978,232.38
  5. Step 5: Solve for x
    x = 431,978,232.38/21,633.68
  6. Step 6: Final answer
    x = 19,967.86

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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.