Home / 20,948.22-31,421.79-8,467.92

Finding the Fourth Proportional to 20,948.22, 31,421.79 and 8,467.92

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Solution

The fourth proportional to 20,948.22, 31,421.79 and 8,467.92 is: 12,701.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.22 : 31,421.79 = 8,467.92 : x
  2. Step 2: Convert to fraction form
    20,948.22/31,421.79 = 8,467.92/x
  3. Step 3: Cross multiply
    20,948.22x = 31,421.79 × 8,467.92
  4. Step 4: Simplify right side
    20,948.22x = 266,077,203.98
  5. Step 5: Solve for x
    x = 266,077,203.98/20,948.22
  6. Step 6: Final answer
    x = 12,701.66

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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.