Home / 26,172.48-36,131.40-20,190.72

Finding the Fourth Proportional to 26,172.48, 36,131.40 and 20,190.72

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Solution

The fourth proportional to 26,172.48, 36,131.40 and 20,190.72 is: 27,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,172.48 : 36,131.40 = 20,190.72 : x
  2. Step 2: Convert to fraction form
    26,172.48/36,131.40 = 20,190.72/x
  3. Step 3: Cross multiply
    26,172.48x = 36,131.40 × 20,190.72
  4. Step 4: Simplify right side
    26,172.48x = 729,518,980.61
  5. Step 5: Solve for x
    x = 729,518,980.61/26,172.48
  6. Step 6: Final answer
    x = 27,873.51

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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.