Home / 20,276.70-30,398.85-8,580.30

Finding the Fourth Proportional to 20,276.70, 30,398.85 and 8,580.30

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Solution

The fourth proportional to 20,276.70, 30,398.85 and 8,580.30 is: 12,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.70 : 30,398.85 = 8,580.30 : x
  2. Step 2: Convert to fraction form
    20,276.70/30,398.85 = 8,580.30/x
  3. Step 3: Cross multiply
    20,276.70x = 30,398.85 × 8,580.30
  4. Step 4: Simplify right side
    20,276.70x = 260,831,252.66
  5. Step 5: Solve for x
    x = 260,831,252.66/20,276.70
  6. Step 6: Final answer
    x = 12,863.59

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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.