Home / 13,885.60-20,828.40-4,025.20

Finding the Fourth Proportional to 13,885.60, 20,828.40 and 4,025.20

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Solution

The fourth proportional to 13,885.60, 20,828.40 and 4,025.20 is: 6,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.60 : 20,828.40 = 4,025.20 : x
  2. Step 2: Convert to fraction form
    13,885.60/20,828.40 = 4,025.20/x
  3. Step 3: Cross multiply
    13,885.60x = 20,828.40 × 4,025.20
  4. Step 4: Simplify right side
    13,885.60x = 83,838,475.68
  5. Step 5: Solve for x
    x = 83,838,475.68/13,885.60
  6. Step 6: Final answer
    x = 6,037.80

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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.