Home / 19,921.22-27,490.20-11,422.93

Finding the Fourth Proportional to 19,921.22, 27,490.20 and 11,422.93

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Solution

The fourth proportional to 19,921.22, 27,490.20 and 11,422.93 is: 15,763.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.22 : 27,490.20 = 11,422.93 : x
  2. Step 2: Convert to fraction form
    19,921.22/27,490.20 = 11,422.93/x
  3. Step 3: Cross multiply
    19,921.22x = 27,490.20 × 11,422.93
  4. Step 4: Simplify right side
    19,921.22x = 314,018,630.29
  5. Step 5: Solve for x
    x = 314,018,630.29/19,921.22
  6. Step 6: Final answer
    x = 15,763.02

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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.