Home / 19,649.28-27,090-16,279.68

Finding the Fourth Proportional to 19,649.28, 27,090 and 16,279.68

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Solution

The fourth proportional to 19,649.28, 27,090 and 16,279.68 is: 22,444.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,649.28 : 27,090 = 16,279.68 : x
  2. Step 2: Convert to fraction form
    19,649.28/27,090 = 16,279.68/x
  3. Step 3: Cross multiply
    19,649.28x = 27,090 × 16,279.68
  4. Step 4: Simplify right side
    19,649.28x = 441,016,531.20
  5. Step 5: Solve for x
    x = 441,016,531.20/19,649.28
  6. Step 6: Final answer
    x = 22,444.41

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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.