Home / 20,742.27-31,100.90-8,264.22

Finding the Fourth Proportional to 20,742.27, 31,100.90 and 8,264.22

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Solution

The fourth proportional to 20,742.27, 31,100.90 and 8,264.22 is: 12,391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.27 : 31,100.90 = 8,264.22 : x
  2. Step 2: Convert to fraction form
    20,742.27/31,100.90 = 8,264.22/x
  3. Step 3: Cross multiply
    20,742.27x = 31,100.90 × 8,264.22
  4. Step 4: Simplify right side
    20,742.27x = 257,024,638.48
  5. Step 5: Solve for x
    x = 257,024,638.48/20,742.27
  6. Step 6: Final answer
    x = 12,391.35

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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.