Home / 15,834.12-21,851.10-8,761

Finding the Fourth Proportional to 15,834.12, 21,851.10 and 8,761

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Solution

The fourth proportional to 15,834.12, 21,851.10 and 8,761 is: 12,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,834.12 : 21,851.10 = 8,761 : x
  2. Step 2: Convert to fraction form
    15,834.12/21,851.10 = 8,761/x
  3. Step 3: Cross multiply
    15,834.12x = 21,851.10 × 8,761
  4. Step 4: Simplify right side
    15,834.12x = 191,437,487.10
  5. Step 5: Solve for x
    x = 191,437,487.10/15,834.12
  6. Step 6: Final answer
    x = 12,090.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.