Home / 13,489.76-20,237.04-4,129.58

Finding the Fourth Proportional to 13,489.76, 20,237.04 and 4,129.58

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Solution

The fourth proportional to 13,489.76, 20,237.04 and 4,129.58 is: 6,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.76 : 20,237.04 = 4,129.58 : x
  2. Step 2: Convert to fraction form
    13,489.76/20,237.04 = 4,129.58/x
  3. Step 3: Cross multiply
    13,489.76x = 20,237.04 × 4,129.58
  4. Step 4: Simplify right side
    13,489.76x = 83,570,353.81
  5. Step 5: Solve for x
    x = 83,570,353.81/13,489.76
  6. Step 6: Final answer
    x = 6,195.10

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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.