Home / 26,820.47-36,989.91-20,120.96

Finding the Fourth Proportional to 26,820.47, 36,989.91 and 20,120.96

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Solution

The fourth proportional to 26,820.47, 36,989.91 and 20,120.96 is: 27,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,820.47 : 36,989.91 = 20,120.96 : x
  2. Step 2: Convert to fraction form
    26,820.47/36,989.91 = 20,120.96/x
  3. Step 3: Cross multiply
    26,820.47x = 36,989.91 × 20,120.96
  4. Step 4: Simplify right side
    26,820.47x = 744,272,314.56
  5. Step 5: Solve for x
    x = 744,272,314.56/26,820.47
  6. Step 6: Final answer
    x = 27,750.16

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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.