Home / 20,015.10-27,615.87-12,933

Finding the Fourth Proportional to 20,015.10, 27,615.87 and 12,933

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Solution

The fourth proportional to 20,015.10, 27,615.87 and 12,933 is: 17,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.10 : 27,615.87 = 12,933 : x
  2. Step 2: Convert to fraction form
    20,015.10/27,615.87 = 12,933/x
  3. Step 3: Cross multiply
    20,015.10x = 27,615.87 × 12,933
  4. Step 4: Simplify right side
    20,015.10x = 357,156,046.71
  5. Step 5: Solve for x
    x = 357,156,046.71/20,015.10
  6. Step 6: Final answer
    x = 17,844.33

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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.