Home / 20,753.58-31,129.23-9,066.78

Finding the Fourth Proportional to 20,753.58, 31,129.23 and 9,066.78

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Solution

The fourth proportional to 20,753.58, 31,129.23 and 9,066.78 is: 13,599.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.58 : 31,129.23 = 9,066.78 : x
  2. Step 2: Convert to fraction form
    20,753.58/31,129.23 = 9,066.78/x
  3. Step 3: Cross multiply
    20,753.58x = 31,129.23 × 9,066.78
  4. Step 4: Simplify right side
    20,753.58x = 282,241,879.98
  5. Step 5: Solve for x
    x = 282,241,879.98/20,753.58
  6. Step 6: Final answer
    x = 13,599.67

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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.