Home / 15,057.75-20,779.39-8,343.35

Finding the Fourth Proportional to 15,057.75, 20,779.39 and 8,343.35

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Solution

The fourth proportional to 15,057.75, 20,779.39 and 8,343.35 is: 11,513.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.75 : 20,779.39 = 8,343.35 : x
  2. Step 2: Convert to fraction form
    15,057.75/20,779.39 = 8,343.35/x
  3. Step 3: Cross multiply
    15,057.75x = 20,779.39 × 8,343.35
  4. Step 4: Simplify right side
    15,057.75x = 173,369,777.96
  5. Step 5: Solve for x
    x = 173,369,777.96/15,057.75
  6. Step 6: Final answer
    x = 11,513.66

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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.