Home / 20,741.77-31,100.14-8,263.72

Finding the Fourth Proportional to 20,741.77, 31,100.14 and 8,263.72

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Solution

The fourth proportional to 20,741.77, 31,100.14 and 8,263.72 is: 12,390.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.77 : 31,100.14 = 8,263.72 : x
  2. Step 2: Convert to fraction form
    20,741.77/31,100.14 = 8,263.72/x
  3. Step 3: Cross multiply
    20,741.77x = 31,100.14 × 8,263.72
  4. Step 4: Simplify right side
    20,741.77x = 257,002,848.92
  5. Step 5: Solve for x
    x = 257,002,848.92/20,741.77
  6. Step 6: Final answer
    x = 12,390.59

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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.