Home / 28,779.46-39,717.21-16,205.38

Finding the Fourth Proportional to 28,779.46, 39,717.21 and 16,205.38

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Solution

The fourth proportional to 28,779.46, 39,717.21 and 16,205.38 is: 22,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.46 : 39,717.21 = 16,205.38 : x
  2. Step 2: Convert to fraction form
    28,779.46/39,717.21 = 16,205.38/x
  3. Step 3: Cross multiply
    28,779.46x = 39,717.21 × 16,205.38
  4. Step 4: Simplify right side
    28,779.46x = 643,632,480.59
  5. Step 5: Solve for x
    x = 643,632,480.59/28,779.46
  6. Step 6: Final answer
    x = 22,364.30

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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.