Home / 20,548.38-30,840.04-8,077.12

Finding the Fourth Proportional to 20,548.38, 30,840.04 and 8,077.12

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Solution

The fourth proportional to 20,548.38, 30,840.04 and 8,077.12 is: 12,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.38 : 30,840.04 = 8,077.12 : x
  2. Step 2: Convert to fraction form
    20,548.38/30,840.04 = 8,077.12/x
  3. Step 3: Cross multiply
    20,548.38x = 30,840.04 × 8,077.12
  4. Step 4: Simplify right side
    20,548.38x = 249,098,703.88
  5. Step 5: Solve for x
    x = 249,098,703.88/20,548.38
  6. Step 6: Final answer
    x = 12,122.55

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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.