Home / 19,920.30-27,490.37-11,422.41

Finding the Fourth Proportional to 19,920.30, 27,490.37 and 11,422.41

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Solution

The fourth proportional to 19,920.30, 27,490.37 and 11,422.41 is: 15,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.30 : 27,490.37 = 11,422.41 : x
  2. Step 2: Convert to fraction form
    19,920.30/27,490.37 = 11,422.41/x
  3. Step 3: Cross multiply
    19,920.30x = 27,490.37 × 11,422.41
  4. Step 4: Simplify right side
    19,920.30x = 314,006,220.08
  5. Step 5: Solve for x
    x = 314,006,220.08/19,920.30
  6. Step 6: Final answer
    x = 15,763.13

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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.