Home / 8,685.29-13,027.84-2,111.47

Finding the Fourth Proportional to 8,685.29, 13,027.84 and 2,111.47

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Solution

The fourth proportional to 8,685.29, 13,027.84 and 2,111.47 is: 3,167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.29 : 13,027.84 = 2,111.47 : x
  2. Step 2: Convert to fraction form
    8,685.29/13,027.84 = 2,111.47/x
  3. Step 3: Cross multiply
    8,685.29x = 13,027.84 × 2,111.47
  4. Step 4: Simplify right side
    8,685.29x = 27,507,855.48
  5. Step 5: Solve for x
    x = 27,507,855.48/8,685.29
  6. Step 6: Final answer
    x = 3,167.18

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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.