Home / 20,270.34-27,972.78-11,317.98

Finding the Fourth Proportional to 20,270.34, 27,972.78 and 11,317.98

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Solution

The fourth proportional to 20,270.34, 27,972.78 and 11,317.98 is: 15,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.34 : 27,972.78 = 11,317.98 : x
  2. Step 2: Convert to fraction form
    20,270.34/27,972.78 = 11,317.98/x
  3. Step 3: Cross multiply
    20,270.34x = 27,972.78 × 11,317.98
  4. Step 4: Simplify right side
    20,270.34x = 316,595,364.58
  5. Step 5: Solve for x
    x = 316,595,364.58/20,270.34
  6. Step 6: Final answer
    x = 15,618.65

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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.