Home / 20,133.40-27,779.67-12,175.45

Finding the Fourth Proportional to 20,133.40, 27,779.67 and 12,175.45

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Solution

The fourth proportional to 20,133.40, 27,779.67 and 12,175.45 is: 16,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.40 : 27,779.67 = 12,175.45 : x
  2. Step 2: Convert to fraction form
    20,133.40/27,779.67 = 12,175.45/x
  3. Step 3: Cross multiply
    20,133.40x = 27,779.67 × 12,175.45
  4. Step 4: Simplify right side
    20,133.40x = 338,229,983.10
  5. Step 5: Solve for x
    x = 338,229,983.10/20,133.40
  6. Step 6: Final answer
    x = 16,799.45

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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.