Home / 13,940.32-19,231.36-8,275.30

Finding the Fourth Proportional to 13,940.32, 19,231.36 and 8,275.30

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Solution

The fourth proportional to 13,940.32, 19,231.36 and 8,275.30 is: 11,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.32 : 19,231.36 = 8,275.30 : x
  2. Step 2: Convert to fraction form
    13,940.32/19,231.36 = 8,275.30/x
  3. Step 3: Cross multiply
    13,940.32x = 19,231.36 × 8,275.30
  4. Step 4: Simplify right side
    13,940.32x = 159,145,273.41
  5. Step 5: Solve for x
    x = 159,145,273.41/13,940.32
  6. Step 6: Final answer
    x = 11,416.19

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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.