Home / 20,254.02-27,942.75-12,687.18

Finding the Fourth Proportional to 20,254.02, 27,942.75 and 12,687.18

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Solution

The fourth proportional to 20,254.02, 27,942.75 and 12,687.18 is: 17,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.02 : 27,942.75 = 12,687.18 : x
  2. Step 2: Convert to fraction form
    20,254.02/27,942.75 = 12,687.18/x
  3. Step 3: Cross multiply
    20,254.02x = 27,942.75 × 12,687.18
  4. Step 4: Simplify right side
    20,254.02x = 354,514,594.16
  5. Step 5: Solve for x
    x = 354,514,594.16/20,254.02
  6. Step 6: Final answer
    x = 17,503.42

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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.