Home / 20,135.46-30,055.89-18,671.80

Finding the Fourth Proportional to 20,135.46, 30,055.89 and 18,671.80

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Solution

The fourth proportional to 20,135.46, 30,055.89 and 18,671.80 is: 27,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.46 : 30,055.89 = 18,671.80 : x
  2. Step 2: Convert to fraction form
    20,135.46/30,055.89 = 18,671.80/x
  3. Step 3: Cross multiply
    20,135.46x = 30,055.89 × 18,671.80
  4. Step 4: Simplify right side
    20,135.46x = 561,197,566.90
  5. Step 5: Solve for x
    x = 561,197,566.90/20,135.46
  6. Step 6: Final answer
    x = 27,871.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.