Home / 20,207.45-27,897.85-13,504.43

Finding the Fourth Proportional to 20,207.45, 27,897.85 and 13,504.43

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Solution

The fourth proportional to 20,207.45, 27,897.85 and 13,504.43 is: 18,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.45 : 27,897.85 = 13,504.43 : x
  2. Step 2: Convert to fraction form
    20,207.45/27,897.85 = 13,504.43/x
  3. Step 3: Cross multiply
    20,207.45x = 27,897.85 × 13,504.43
  4. Step 4: Simplify right side
    20,207.45x = 376,744,649.10
  5. Step 5: Solve for x
    x = 376,744,649.10/20,207.45
  6. Step 6: Final answer
    x = 18,643.85

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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.