Home / 20,279.41-27,982.81-11,325.77

Finding the Fourth Proportional to 20,279.41, 27,982.81 and 11,325.77

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Solution

The fourth proportional to 20,279.41, 27,982.81 and 11,325.77 is: 15,628.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.41 : 27,982.81 = 11,325.77 : x
  2. Step 2: Convert to fraction form
    20,279.41/27,982.81 = 11,325.77/x
  3. Step 3: Cross multiply
    20,279.41x = 27,982.81 × 11,325.77
  4. Step 4: Simplify right side
    20,279.41x = 316,926,730.10
  5. Step 5: Solve for x
    x = 316,926,730.10/20,279.41
  6. Step 6: Final answer
    x = 15,628.01

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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.