Home / 13,629.12-20,439.06-4,862.76

Finding the Fourth Proportional to 13,629.12, 20,439.06 and 4,862.76

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Solution

The fourth proportional to 13,629.12, 20,439.06 and 4,862.76 is: 7,292.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.12 : 20,439.06 = 4,862.76 : x
  2. Step 2: Convert to fraction form
    13,629.12/20,439.06 = 4,862.76/x
  3. Step 3: Cross multiply
    13,629.12x = 20,439.06 × 4,862.76
  4. Step 4: Simplify right side
    13,629.12x = 99,390,243.41
  5. Step 5: Solve for x
    x = 99,390,243.41/13,629.12
  6. Step 6: Final answer
    x = 7,292.49

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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.