Home / 21,455.28-32,171.94-8,971.89

Finding the Fourth Proportional to 21,455.28, 32,171.94 and 8,971.89

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Solution

The fourth proportional to 21,455.28, 32,171.94 and 8,971.89 is: 13,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.28 : 32,171.94 = 8,971.89 : x
  2. Step 2: Convert to fraction form
    21,455.28/32,171.94 = 8,971.89/x
  3. Step 3: Cross multiply
    21,455.28x = 32,171.94 × 8,971.89
  4. Step 4: Simplify right side
    21,455.28x = 288,643,106.77
  5. Step 5: Solve for x
    x = 288,643,106.77/21,455.28
  6. Step 6: Final answer
    x = 13,453.24

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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.