Home / 20,122.66-27,779.26-12,573.18

Finding the Fourth Proportional to 20,122.66, 27,779.26 and 12,573.18

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Solution

The fourth proportional to 20,122.66, 27,779.26 and 12,573.18 is: 17,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.66 : 27,779.26 = 12,573.18 : x
  2. Step 2: Convert to fraction form
    20,122.66/27,779.26 = 12,573.18/x
  3. Step 3: Cross multiply
    20,122.66x = 27,779.26 × 12,573.18
  4. Step 4: Simplify right side
    20,122.66x = 349,273,636.25
  5. Step 5: Solve for x
    x = 349,273,636.25/20,122.66
  6. Step 6: Final answer
    x = 17,357.23

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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.