Home / 21,031.86-31,542.30-6,236.81

Finding the Fourth Proportional to 21,031.86, 31,542.30 and 6,236.81

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Solution

The fourth proportional to 21,031.86, 31,542.30 and 6,236.81 is: 9,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.86 : 31,542.30 = 6,236.81 : x
  2. Step 2: Convert to fraction form
    21,031.86/31,542.30 = 6,236.81/x
  3. Step 3: Cross multiply
    21,031.86x = 31,542.30 × 6,236.81
  4. Step 4: Simplify right side
    21,031.86x = 196,723,174.35
  5. Step 5: Solve for x
    x = 196,723,174.35/21,031.86
  6. Step 6: Final answer
    x = 9,353.58

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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.