Home / 20,107.55-30,127.13-13,076.82

Finding the Fourth Proportional to 20,107.55, 30,127.13 and 13,076.82

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Solution

The fourth proportional to 20,107.55, 30,127.13 and 13,076.82 is: 19,592.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.55 : 30,127.13 = 13,076.82 : x
  2. Step 2: Convert to fraction form
    20,107.55/30,127.13 = 13,076.82/x
  3. Step 3: Cross multiply
    20,107.55x = 30,127.13 × 13,076.82
  4. Step 4: Simplify right side
    20,107.55x = 393,967,056.13
  5. Step 5: Solve for x
    x = 393,967,056.13/20,107.55
  6. Step 6: Final answer
    x = 19,592.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.