Home / 20,205.48-27,886.90-11,820.36

Finding the Fourth Proportional to 20,205.48, 27,886.90 and 11,820.36

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Solution

The fourth proportional to 20,205.48, 27,886.90 and 11,820.36 is: 16,314.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.48 : 27,886.90 = 11,820.36 : x
  2. Step 2: Convert to fraction form
    20,205.48/27,886.90 = 11,820.36/x
  3. Step 3: Cross multiply
    20,205.48x = 27,886.90 × 11,820.36
  4. Step 4: Simplify right side
    20,205.48x = 329,633,197.28
  5. Step 5: Solve for x
    x = 329,633,197.28/20,205.48
  6. Step 6: Final answer
    x = 16,314.05

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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.