Home / 20,133.03-27,779.10-12,175.08

Finding the Fourth Proportional to 20,133.03, 27,779.10 and 12,175.08

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Solution

The fourth proportional to 20,133.03, 27,779.10 and 12,175.08 is: 16,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.03 : 27,779.10 = 12,175.08 : x
  2. Step 2: Convert to fraction form
    20,133.03/27,779.10 = 12,175.08/x
  3. Step 3: Cross multiply
    20,133.03x = 27,779.10 × 12,175.08
  4. Step 4: Simplify right side
    20,133.03x = 338,212,764.83
  5. Step 5: Solve for x
    x = 338,212,764.83/20,133.03
  6. Step 6: Final answer
    x = 16,798.90

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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.