Home / 20,127.17-27,779.44-12,854.59

Finding the Fourth Proportional to 20,127.17, 27,779.44 and 12,854.59

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Solution

The fourth proportional to 20,127.17, 27,779.44 and 12,854.59 is: 17,741.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.17 : 27,779.44 = 12,854.59 : x
  2. Step 2: Convert to fraction form
    20,127.17/27,779.44 = 12,854.59/x
  3. Step 3: Cross multiply
    20,127.17x = 27,779.44 × 12,854.59
  4. Step 4: Simplify right side
    20,127.17x = 357,093,247.36
  5. Step 5: Solve for x
    x = 357,093,247.36/20,127.17
  6. Step 6: Final answer
    x = 17,741.85

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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.