Home / 13,599.20-20,355.60-12,562.40

Finding the Fourth Proportional to 13,599.20, 20,355.60 and 12,562.40

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Solution

The fourth proportional to 13,599.20, 20,355.60 and 12,562.40 is: 18,803.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.20 : 20,355.60 = 12,562.40 : x
  2. Step 2: Convert to fraction form
    13,599.20/20,355.60 = 12,562.40/x
  3. Step 3: Cross multiply
    13,599.20x = 20,355.60 × 12,562.40
  4. Step 4: Simplify right side
    13,599.20x = 255,715,189.44
  5. Step 5: Solve for x
    x = 255,715,189.44/13,599.20
  6. Step 6: Final answer
    x = 18,803.69

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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.