Home / 20,107.13-27,743.72-11,152.71

Finding the Fourth Proportional to 20,107.13, 27,743.72 and 11,152.71

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Solution

The fourth proportional to 20,107.13, 27,743.72 and 11,152.71 is: 15,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.13 : 27,743.72 = 11,152.71 : x
  2. Step 2: Convert to fraction form
    20,107.13/27,743.72 = 11,152.71/x
  3. Step 3: Cross multiply
    20,107.13x = 27,743.72 × 11,152.71
  4. Step 4: Simplify right side
    20,107.13x = 309,417,607.72
  5. Step 5: Solve for x
    x = 309,417,607.72/20,107.13
  6. Step 6: Final answer
    x = 15,388.46

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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.