Home / 20,848.20-31,272.30-8,374.20

Finding the Fourth Proportional to 20,848.20, 31,272.30 and 8,374.20

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Solution

The fourth proportional to 20,848.20, 31,272.30 and 8,374.20 is: 12,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.20 : 31,272.30 = 8,374.20 : x
  2. Step 2: Convert to fraction form
    20,848.20/31,272.30 = 8,374.20/x
  3. Step 3: Cross multiply
    20,848.20x = 31,272.30 × 8,374.20
  4. Step 4: Simplify right side
    20,848.20x = 261,880,494.66
  5. Step 5: Solve for x
    x = 261,880,494.66/20,848.20
  6. Step 6: Final answer
    x = 12,561.30

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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.