Home / 20,143.41-30,212.33-5,353.53

Finding the Fourth Proportional to 20,143.41, 30,212.33 and 5,353.53

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Solution

The fourth proportional to 20,143.41, 30,212.33 and 5,353.53 is: 8,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.41 : 30,212.33 = 5,353.53 : x
  2. Step 2: Convert to fraction form
    20,143.41/30,212.33 = 5,353.53/x
  3. Step 3: Cross multiply
    20,143.41x = 30,212.33 × 5,353.53
  4. Step 4: Simplify right side
    20,143.41x = 161,742,588.26
  5. Step 5: Solve for x
    x = 161,742,588.26/20,143.41
  6. Step 6: Final answer
    x = 8,029.55

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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.