Home / 20,868.02-31,301.22-8,384.30

Finding the Fourth Proportional to 20,868.02, 31,301.22 and 8,384.30

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Solution

The fourth proportional to 20,868.02, 31,301.22 and 8,384.30 is: 12,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.02 : 31,301.22 = 8,384.30 : x
  2. Step 2: Convert to fraction form
    20,868.02/31,301.22 = 8,384.30/x
  3. Step 3: Cross multiply
    20,868.02x = 31,301.22 × 8,384.30
  4. Step 4: Simplify right side
    20,868.02x = 262,438,818.85
  5. Step 5: Solve for x
    x = 262,438,818.85/20,868.02
  6. Step 6: Final answer
    x = 12,576.12

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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.