Home / 20,886.92-31,358.46-20,666.60

Finding the Fourth Proportional to 20,886.92, 31,358.46 and 20,666.60

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Solution

The fourth proportional to 20,886.92, 31,358.46 and 20,666.60 is: 31,027.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.92 : 31,358.46 = 20,666.60 : x
  2. Step 2: Convert to fraction form
    20,886.92/31,358.46 = 20,666.60/x
  3. Step 3: Cross multiply
    20,886.92x = 31,358.46 × 20,666.60
  4. Step 4: Simplify right side
    20,886.92x = 648,072,749.44
  5. Step 5: Solve for x
    x = 648,072,749.44/20,886.92
  6. Step 6: Final answer
    x = 31,027.68

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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.