Home / 20,826.56-31,307.50-16,711.58

Finding the Fourth Proportional to 20,826.56, 31,307.50 and 16,711.58

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Solution

The fourth proportional to 20,826.56, 31,307.50 and 16,711.58 is: 25,121.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.56 : 31,307.50 = 16,711.58 : x
  2. Step 2: Convert to fraction form
    20,826.56/31,307.50 = 16,711.58/x
  3. Step 3: Cross multiply
    20,826.56x = 31,307.50 × 16,711.58
  4. Step 4: Simplify right side
    20,826.56x = 523,197,790.85
  5. Step 5: Solve for x
    x = 523,197,790.85/20,826.56
  6. Step 6: Final answer
    x = 25,121.66

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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.