Home / 31,863.15-47,729.09-18,683.75

Finding the Fourth Proportional to 31,863.15, 47,729.09 and 18,683.75

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Solution

The fourth proportional to 31,863.15, 47,729.09 and 18,683.75 is: 27,987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,863.15 : 47,729.09 = 18,683.75 : x
  2. Step 2: Convert to fraction form
    31,863.15/47,729.09 = 18,683.75/x
  3. Step 3: Cross multiply
    31,863.15x = 47,729.09 × 18,683.75
  4. Step 4: Simplify right side
    31,863.15x = 891,758,053.22
  5. Step 5: Solve for x
    x = 891,758,053.22/31,863.15
  6. Step 6: Final answer
    x = 27,987.13

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1.5x scale

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.