Home / 20,779.89-31,169.84-16,109.43

Finding the Fourth Proportional to 20,779.89, 31,169.84 and 16,109.43

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Solution

The fourth proportional to 20,779.89, 31,169.84 and 16,109.43 is: 24,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.89 : 31,169.84 = 16,109.43 : x
  2. Step 2: Convert to fraction form
    20,779.89/31,169.84 = 16,109.43/x
  3. Step 3: Cross multiply
    20,779.89x = 31,169.84 × 16,109.43
  4. Step 4: Simplify right side
    20,779.89x = 502,128,275.04
  5. Step 5: Solve for x
    x = 502,128,275.04/20,779.89
  6. Step 6: Final answer
    x = 24,164.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.