Home / 20,730.10-31,070.82-9,613.38

Finding the Fourth Proportional to 20,730.10, 31,070.82 and 9,613.38

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Solution

The fourth proportional to 20,730.10, 31,070.82 and 9,613.38 is: 14,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.10 : 31,070.82 = 9,613.38 : x
  2. Step 2: Convert to fraction form
    20,730.10/31,070.82 = 9,613.38/x
  3. Step 3: Cross multiply
    20,730.10x = 31,070.82 × 9,613.38
  4. Step 4: Simplify right side
    20,730.10x = 298,695,671.02
  5. Step 5: Solve for x
    x = 298,695,671.02/20,730.10
  6. Step 6: Final answer
    x = 14,408.79

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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.