Home / 20,757.06-31,116.47-8,274.11

Finding the Fourth Proportional to 20,757.06, 31,116.47 and 8,274.11

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Solution

The fourth proportional to 20,757.06, 31,116.47 and 8,274.11 is: 12,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.06 : 31,116.47 = 8,274.11 : x
  2. Step 2: Convert to fraction form
    20,757.06/31,116.47 = 8,274.11/x
  3. Step 3: Cross multiply
    20,757.06x = 31,116.47 × 8,274.11
  4. Step 4: Simplify right side
    20,757.06x = 257,460,898.64
  5. Step 5: Solve for x
    x = 257,460,898.64/20,757.06
  6. Step 6: Final answer
    x = 12,403.53

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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.