Home / 20,732.74-28,611.83-11,779.70

Finding the Fourth Proportional to 20,732.74, 28,611.83 and 11,779.70

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Solution

The fourth proportional to 20,732.74, 28,611.83 and 11,779.70 is: 16,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.74 : 28,611.83 = 11,779.70 : x
  2. Step 2: Convert to fraction form
    20,732.74/28,611.83 = 11,779.70/x
  3. Step 3: Cross multiply
    20,732.74x = 28,611.83 × 11,779.70
  4. Step 4: Simplify right side
    20,732.74x = 337,038,660.24
  5. Step 5: Solve for x
    x = 337,038,660.24/20,732.74
  6. Step 6: Final answer
    x = 16,256.35

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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.