Home / 37,987.22-52,422.36-21,220.22

Finding the Fourth Proportional to 37,987.22, 52,422.36 and 21,220.22

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Solution

The fourth proportional to 37,987.22, 52,422.36 and 21,220.22 is: 29,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,987.22 : 52,422.36 = 21,220.22 : x
  2. Step 2: Convert to fraction form
    37,987.22/52,422.36 = 21,220.22/x
  3. Step 3: Cross multiply
    37,987.22x = 52,422.36 × 21,220.22
  4. Step 4: Simplify right side
    37,987.22x = 1,112,414,026.17
  5. Step 5: Solve for x
    x = 1,112,414,026.17/37,987.22
  6. Step 6: Final answer
    x = 29,283.90

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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.