Home / 20,688.56-31,026.24-8,204.90

Finding the Fourth Proportional to 20,688.56, 31,026.24 and 8,204.90

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Solution

The fourth proportional to 20,688.56, 31,026.24 and 8,204.90 is: 12,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.56 : 31,026.24 = 8,204.90 : x
  2. Step 2: Convert to fraction form
    20,688.56/31,026.24 = 8,204.90/x
  3. Step 3: Cross multiply
    20,688.56x = 31,026.24 × 8,204.90
  4. Step 4: Simplify right side
    20,688.56x = 254,567,041.44
  5. Step 5: Solve for x
    x = 254,567,041.44/20,688.56
  6. Step 6: Final answer
    x = 12,304.72

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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.