Home / 20,783.08-31,174.77-5,200.70

Finding the Fourth Proportional to 20,783.08, 31,174.77 and 5,200.70

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Solution

The fourth proportional to 20,783.08, 31,174.77 and 5,200.70 is: 7,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.08 : 31,174.77 = 5,200.70 : x
  2. Step 2: Convert to fraction form
    20,783.08/31,174.77 = 5,200.70/x
  3. Step 3: Cross multiply
    20,783.08x = 31,174.77 × 5,200.70
  4. Step 4: Simplify right side
    20,783.08x = 162,130,626.34
  5. Step 5: Solve for x
    x = 162,130,626.34/20,783.08
  6. Step 6: Final answer
    x = 7,801.09

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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.