Home / 12,720.64-19,073.20-5,699.36

Finding the Fourth Proportional to 12,720.64, 19,073.20 and 5,699.36

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Solution

The fourth proportional to 12,720.64, 19,073.20 and 5,699.36 is: 8,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.64 : 19,073.20 = 5,699.36 : x
  2. Step 2: Convert to fraction form
    12,720.64/19,073.20 = 5,699.36/x
  3. Step 3: Cross multiply
    12,720.64x = 19,073.20 × 5,699.36
  4. Step 4: Simplify right side
    12,720.64x = 108,705,033.15
  5. Step 5: Solve for x
    x = 108,705,033.15/12,720.64
  6. Step 6: Final answer
    x = 8,545.56

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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.