Home / 37,987.92-52,422.39-20,991.29

Finding the Fourth Proportional to 37,987.92, 52,422.39 and 20,991.29

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Solution

The fourth proportional to 37,987.92, 52,422.39 and 20,991.29 is: 28,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,987.92 : 52,422.39 = 20,991.29 : x
  2. Step 2: Convert to fraction form
    37,987.92/52,422.39 = 20,991.29/x
  3. Step 3: Cross multiply
    37,987.92x = 52,422.39 × 20,991.29
  4. Step 4: Simplify right side
    37,987.92x = 1,100,413,328.87
  5. Step 5: Solve for x
    x = 1,100,413,328.87/37,987.92
  6. Step 6: Final answer
    x = 28,967.45

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Double scale
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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.