Home / 13,200.48-19,807.20-12,772.80

Finding the Fourth Proportional to 13,200.48, 19,807.20 and 12,772.80

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Solution

The fourth proportional to 13,200.48, 19,807.20 and 12,772.80 is: 19,165.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.48 : 19,807.20 = 12,772.80 : x
  2. Step 2: Convert to fraction form
    13,200.48/19,807.20 = 12,772.80/x
  3. Step 3: Cross multiply
    13,200.48x = 19,807.20 × 12,772.80
  4. Step 4: Simplify right side
    13,200.48x = 252,993,404.16
  5. Step 5: Solve for x
    x = 252,993,404.16/13,200.48
  6. Step 6: Final answer
    x = 19,165.47

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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.