Home / 20,129.17-27,779.21-11,632.42

Finding the Fourth Proportional to 20,129.17, 27,779.21 and 11,632.42

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Solution

The fourth proportional to 20,129.17, 27,779.21 and 11,632.42 is: 16,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.17 : 27,779.21 = 11,632.42 : x
  2. Step 2: Convert to fraction form
    20,129.17/27,779.21 = 11,632.42/x
  3. Step 3: Cross multiply
    20,129.17x = 27,779.21 × 11,632.42
  4. Step 4: Simplify right side
    20,129.17x = 323,139,523.60
  5. Step 5: Solve for x
    x = 323,139,523.60/20,129.17
  6. Step 6: Final answer
    x = 16,053.30

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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.