Home / 28,271.64-39,000.18-16,779.90

Finding the Fourth Proportional to 28,271.64, 39,000.18 and 16,779.90

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Solution

The fourth proportional to 28,271.64, 39,000.18 and 16,779.90 is: 23,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.64 : 39,000.18 = 16,779.90 : x
  2. Step 2: Convert to fraction form
    28,271.64/39,000.18 = 16,779.90/x
  3. Step 3: Cross multiply
    28,271.64x = 39,000.18 × 16,779.90
  4. Step 4: Simplify right side
    28,271.64x = 654,419,120.38
  5. Step 5: Solve for x
    x = 654,419,120.38/28,271.64
  6. Step 6: Final answer
    x = 23,147.55

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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.