Home / 20,127.04-27,758.26-12,958.20

Finding the Fourth Proportional to 20,127.04, 27,758.26 and 12,958.20

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Solution

The fourth proportional to 20,127.04, 27,758.26 and 12,958.20 is: 17,871.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.04 : 27,758.26 = 12,958.20 : x
  2. Step 2: Convert to fraction form
    20,127.04/27,758.26 = 12,958.20/x
  3. Step 3: Cross multiply
    20,127.04x = 27,758.26 × 12,958.20
  4. Step 4: Simplify right side
    20,127.04x = 359,697,084.73
  5. Step 5: Solve for x
    x = 359,697,084.73/20,127.04
  6. Step 6: Final answer
    x = 17,871.34

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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.