Home / 19,863.02-27,417.11-12,789.43

Finding the Fourth Proportional to 19,863.02, 27,417.11 and 12,789.43

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Solution

The fourth proportional to 19,863.02, 27,417.11 and 12,789.43 is: 17,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.02 : 27,417.11 = 12,789.43 : x
  2. Step 2: Convert to fraction form
    19,863.02/27,417.11 = 12,789.43/x
  3. Step 3: Cross multiply
    19,863.02x = 27,417.11 × 12,789.43
  4. Step 4: Simplify right side
    19,863.02x = 350,649,209.15
  5. Step 5: Solve for x
    x = 350,649,209.15/19,863.02
  6. Step 6: Final answer
    x = 17,653.37

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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.