Home / 20,279.67-27,984.12-11,325.93

Finding the Fourth Proportional to 20,279.67, 27,984.12 and 11,325.93

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Solution

The fourth proportional to 20,279.67, 27,984.12 and 11,325.93 is: 15,628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.67 : 27,984.12 = 11,325.93 : x
  2. Step 2: Convert to fraction form
    20,279.67/27,984.12 = 11,325.93/x
  3. Step 3: Cross multiply
    20,279.67x = 27,984.12 × 11,325.93
  4. Step 4: Simplify right side
    20,279.67x = 316,946,184.23
  5. Step 5: Solve for x
    x = 316,946,184.23/20,279.67
  6. Step 6: Final answer
    x = 15,628.76

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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.