Home / 21,815.28-32,731.02-11,419.74

Finding the Fourth Proportional to 21,815.28, 32,731.02 and 11,419.74

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Solution

The fourth proportional to 21,815.28, 32,731.02 and 11,419.74 is: 17,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.28 : 32,731.02 = 11,419.74 : x
  2. Step 2: Convert to fraction form
    21,815.28/32,731.02 = 11,419.74/x
  3. Step 3: Cross multiply
    21,815.28x = 32,731.02 × 11,419.74
  4. Step 4: Simplify right side
    21,815.28x = 373,779,738.33
  5. Step 5: Solve for x
    x = 373,779,738.33/21,815.28
  6. Step 6: Final answer
    x = 17,133.85

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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.