Home / 28,311.18-42,472.20-10,779.54

Finding the Fourth Proportional to 28,311.18, 42,472.20 and 10,779.54

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Solution

The fourth proportional to 28,311.18, 42,472.20 and 10,779.54 is: 16,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.18 : 42,472.20 = 10,779.54 : x
  2. Step 2: Convert to fraction form
    28,311.18/42,472.20 = 10,779.54/x
  3. Step 3: Cross multiply
    28,311.18x = 42,472.20 × 10,779.54
  4. Step 4: Simplify right side
    28,311.18x = 457,830,778.79
  5. Step 5: Solve for x
    x = 457,830,778.79/28,311.18
  6. Step 6: Final answer
    x = 16,171.38

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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.