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Finding the Fourth Proportional to 20,714.58, 31,061.70 and 8,866.68

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Solution

The fourth proportional to 20,714.58, 31,061.70 and 8,866.68 is: 13,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.58 : 31,061.70 = 8,866.68 : x
  2. Step 2: Convert to fraction form
    20,714.58/31,061.70 = 8,866.68/x
  3. Step 3: Cross multiply
    20,714.58x = 31,061.70 × 8,866.68
  4. Step 4: Simplify right side
    20,714.58x = 275,414,154.16
  5. Step 5: Solve for x
    x = 275,414,154.16/20,714.58
  6. Step 6: Final answer
    x = 13,295.67

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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.