Home / 13,187.78-19,790.90-5,797.43

Finding the Fourth Proportional to 13,187.78, 19,790.90 and 5,797.43

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Solution

The fourth proportional to 13,187.78, 19,790.90 and 5,797.43 is: 8,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.78 : 19,790.90 = 5,797.43 : x
  2. Step 2: Convert to fraction form
    13,187.78/19,790.90 = 5,797.43/x
  3. Step 3: Cross multiply
    13,187.78x = 19,790.90 × 5,797.43
  4. Step 4: Simplify right side
    13,187.78x = 114,736,333.20
  5. Step 5: Solve for x
    x = 114,736,333.20/13,187.78
  6. Step 6: Final answer
    x = 8,700.20

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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.