Home / 10,518.30-15,779.92-3,122.82

Finding the Fourth Proportional to 10,518.30, 15,779.92 and 3,122.82

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Solution

The fourth proportional to 10,518.30, 15,779.92 and 3,122.82 is: 4,684.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.30 : 15,779.92 = 3,122.82 : x
  2. Step 2: Convert to fraction form
    10,518.30/15,779.92 = 3,122.82/x
  3. Step 3: Cross multiply
    10,518.30x = 15,779.92 × 3,122.82
  4. Step 4: Simplify right side
    10,518.30x = 49,277,849.77
  5. Step 5: Solve for x
    x = 49,277,849.77/10,518.30
  6. Step 6: Final answer
    x = 4,684.96

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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.