Home / 20,818.92-31,225.11-6,779.46

Finding the Fourth Proportional to 20,818.92, 31,225.11 and 6,779.46

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Solution

The fourth proportional to 20,818.92, 31,225.11 and 6,779.46 is: 10,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.92 : 31,225.11 = 6,779.46 : x
  2. Step 2: Convert to fraction form
    20,818.92/31,225.11 = 6,779.46/x
  3. Step 3: Cross multiply
    20,818.92x = 31,225.11 × 6,779.46
  4. Step 4: Simplify right side
    20,818.92x = 211,689,384.24
  5. Step 5: Solve for x
    x = 211,689,384.24/20,818.92
  6. Step 6: Final answer
    x = 10,168.13

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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.