Home / 13,731.08-18,950.42-11,489.00

Finding the Fourth Proportional to 13,731.08, 18,950.42 and 11,489.00

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Solution

The fourth proportional to 13,731.08, 18,950.42 and 11,489.00 is: 15,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.08 : 18,950.42 = 11,489.00 : x
  2. Step 2: Convert to fraction form
    13,731.08/18,950.42 = 11,489.00/x
  3. Step 3: Cross multiply
    13,731.08x = 18,950.42 × 11,489.00
  4. Step 4: Simplify right side
    13,731.08x = 217,721,309.35
  5. Step 5: Solve for x
    x = 217,721,309.35/13,731.08
  6. Step 6: Final answer
    x = 15,856.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.