Home / 13,473.20-20,209.80-8,807.60

Finding the Fourth Proportional to 13,473.20, 20,209.80 and 8,807.60

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Solution

The fourth proportional to 13,473.20, 20,209.80 and 8,807.60 is: 13,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,473.20 : 20,209.80 = 8,807.60 : x
  2. Step 2: Convert to fraction form
    13,473.20/20,209.80 = 8,807.60/x
  3. Step 3: Cross multiply
    13,473.20x = 20,209.80 × 8,807.60
  4. Step 4: Simplify right side
    13,473.20x = 177,999,834.48
  5. Step 5: Solve for x
    x = 177,999,834.48/13,473.20
  6. Step 6: Final answer
    x = 13,211.40

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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.