Home / 13,143.35-19,712.93-3,781.23

Finding the Fourth Proportional to 13,143.35, 19,712.93 and 3,781.23

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Solution

The fourth proportional to 13,143.35, 19,712.93 and 3,781.23 is: 5,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.35 : 19,712.93 = 3,781.23 : x
  2. Step 2: Convert to fraction form
    13,143.35/19,712.93 = 3,781.23/x
  3. Step 3: Cross multiply
    13,143.35x = 19,712.93 × 3,781.23
  4. Step 4: Simplify right side
    13,143.35x = 74,539,103.40
  5. Step 5: Solve for x
    x = 74,539,103.40/13,143.35
  6. Step 6: Final answer
    x = 5,671.24

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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.