Home / 38,143.97-52,639.93-21,149.80

Finding the Fourth Proportional to 38,143.97, 52,639.93 and 21,149.80

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Solution

The fourth proportional to 38,143.97, 52,639.93 and 21,149.80 is: 29,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,143.97 : 52,639.93 = 21,149.80 : x
  2. Step 2: Convert to fraction form
    38,143.97/52,639.93 = 21,149.80/x
  3. Step 3: Cross multiply
    38,143.97x = 52,639.93 × 21,149.80
  4. Step 4: Simplify right side
    38,143.97x = 1,113,323,991.51
  5. Step 5: Solve for x
    x = 1,113,323,991.51/38,143.97
  6. Step 6: Final answer
    x = 29,187.42

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1.5x scale

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.