Home / 21,235.58-31,857.20-8,748.66

Finding the Fourth Proportional to 21,235.58, 31,857.20 and 8,748.66

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Solution

The fourth proportional to 21,235.58, 31,857.20 and 8,748.66 is: 13,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.58 : 31,857.20 = 8,748.66 : x
  2. Step 2: Convert to fraction form
    21,235.58/31,857.20 = 8,748.66/x
  3. Step 3: Cross multiply
    21,235.58x = 31,857.20 × 8,748.66
  4. Step 4: Simplify right side
    21,235.58x = 278,707,833.22
  5. Step 5: Solve for x
    x = 278,707,833.22/21,235.58
  6. Step 6: Final answer
    x = 13,124.57

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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.