Home / 20,734.18-31,112.26-9,635.20

Finding the Fourth Proportional to 20,734.18, 31,112.26 and 9,635.20

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Solution

The fourth proportional to 20,734.18, 31,112.26 and 9,635.20 is: 14,457.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.18 : 31,112.26 = 9,635.20 : x
  2. Step 2: Convert to fraction form
    20,734.18/31,112.26 = 9,635.20/x
  3. Step 3: Cross multiply
    20,734.18x = 31,112.26 × 9,635.20
  4. Step 4: Simplify right side
    20,734.18x = 299,772,847.55
  5. Step 5: Solve for x
    x = 299,772,847.55/20,734.18
  6. Step 6: Final answer
    x = 14,457.91

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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.