Home / 31,862.15-47,727.59-18,682.75

Finding the Fourth Proportional to 31,862.15, 47,727.59 and 18,682.75

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Solution

The fourth proportional to 31,862.15, 47,727.59 and 18,682.75 is: 27,985.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,862.15 : 47,727.59 = 18,682.75 : x
  2. Step 2: Convert to fraction form
    31,862.15/47,727.59 = 18,682.75/x
  3. Step 3: Cross multiply
    31,862.15x = 47,727.59 × 18,682.75
  4. Step 4: Simplify right side
    31,862.15x = 891,682,300.02
  5. Step 5: Solve for x
    x = 891,682,300.02/31,862.15
  6. Step 6: Final answer
    x = 27,985.63

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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.