Home / 21,240.84-31,834.01-8,769.63

Finding the Fourth Proportional to 21,240.84, 31,834.01 and 8,769.63

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Solution

The fourth proportional to 21,240.84, 31,834.01 and 8,769.63 is: 13,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.84 : 31,834.01 = 8,769.63 : x
  2. Step 2: Convert to fraction form
    21,240.84/31,834.01 = 8,769.63/x
  3. Step 3: Cross multiply
    21,240.84x = 31,834.01 × 8,769.63
  4. Step 4: Simplify right side
    21,240.84x = 279,172,445.27
  5. Step 5: Solve for x
    x = 279,172,445.27/21,240.84
  6. Step 6: Final answer
    x = 13,143.19

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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.