Home / 21,419.55-32,138.51-8,281.13

Finding the Fourth Proportional to 21,419.55, 32,138.51 and 8,281.13

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Solution

The fourth proportional to 21,419.55, 32,138.51 and 8,281.13 is: 12,425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.55 : 32,138.51 = 8,281.13 : x
  2. Step 2: Convert to fraction form
    21,419.55/32,138.51 = 8,281.13/x
  3. Step 3: Cross multiply
    21,419.55x = 32,138.51 × 8,281.13
  4. Step 4: Simplify right side
    21,419.55x = 266,142,977.22
  5. Step 5: Solve for x
    x = 266,142,977.22/21,419.55
  6. Step 6: Final answer
    x = 12,425.24

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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.