Home / 20,771.60-31,147.32-9,675.68

Finding the Fourth Proportional to 20,771.60, 31,147.32 and 9,675.68

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Solution

The fourth proportional to 20,771.60, 31,147.32 and 9,675.68 is: 14,508.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.60 : 31,147.32 = 9,675.68 : x
  2. Step 2: Convert to fraction form
    20,771.60/31,147.32 = 9,675.68/x
  3. Step 3: Cross multiply
    20,771.60x = 31,147.32 × 9,675.68
  4. Step 4: Simplify right side
    20,771.60x = 301,371,501.18
  5. Step 5: Solve for x
    x = 301,371,501.18/20,771.60
  6. Step 6: Final answer
    x = 14,508.82

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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.