Home / 19,689.47-27,170.87-11,192.52

Finding the Fourth Proportional to 19,689.47, 27,170.87 and 11,192.52

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Solution

The fourth proportional to 19,689.47, 27,170.87 and 11,192.52 is: 15,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.47 : 27,170.87 = 11,192.52 : x
  2. Step 2: Convert to fraction form
    19,689.47/27,170.87 = 11,192.52/x
  3. Step 3: Cross multiply
    19,689.47x = 27,170.87 × 11,192.52
  4. Step 4: Simplify right side
    19,689.47x = 304,110,601.80
  5. Step 5: Solve for x
    x = 304,110,601.80/19,689.47
  6. Step 6: Final answer
    x = 15,445.34

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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.