Home / 20,278.34-27,984.04-11,325.82

Finding the Fourth Proportional to 20,278.34, 27,984.04 and 11,325.82

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Solution

The fourth proportional to 20,278.34, 27,984.04 and 11,325.82 is: 15,629.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.34 : 27,984.04 = 11,325.82 : x
  2. Step 2: Convert to fraction form
    20,278.34/27,984.04 = 11,325.82/x
  3. Step 3: Cross multiply
    20,278.34x = 27,984.04 × 11,325.82
  4. Step 4: Simplify right side
    20,278.34x = 316,942,199.91
  5. Step 5: Solve for x
    x = 316,942,199.91/20,278.34
  6. Step 6: Final answer
    x = 15,629.59

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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.