Home / 20,117.85-27,764.38-11,167.08

Finding the Fourth Proportional to 20,117.85, 27,764.38 and 11,167.08

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Solution

The fourth proportional to 20,117.85, 27,764.38 and 11,167.08 is: 15,411.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.85 : 27,764.38 = 11,167.08 : x
  2. Step 2: Convert to fraction form
    20,117.85/27,764.38 = 11,167.08/x
  3. Step 3: Cross multiply
    20,117.85x = 27,764.38 × 11,167.08
  4. Step 4: Simplify right side
    20,117.85x = 310,047,024.69
  5. Step 5: Solve for x
    x = 310,047,024.69/20,117.85
  6. Step 6: Final answer
    x = 15,411.54

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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.