Home / 12,908.72-19,365.11-5,513.22

Finding the Fourth Proportional to 12,908.72, 19,365.11 and 5,513.22

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Solution

The fourth proportional to 12,908.72, 19,365.11 and 5,513.22 is: 8,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.72 : 19,365.11 = 5,513.22 : x
  2. Step 2: Convert to fraction form
    12,908.72/19,365.11 = 5,513.22/x
  3. Step 3: Cross multiply
    12,908.72x = 19,365.11 × 5,513.22
  4. Step 4: Simplify right side
    12,908.72x = 106,764,111.75
  5. Step 5: Solve for x
    x = 106,764,111.75/12,908.72
  6. Step 6: Final answer
    x = 8,270.70

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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.