Home / 13,939.56-19,221.84-9,959.22

Finding the Fourth Proportional to 13,939.56, 19,221.84 and 9,959.22

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Solution

The fourth proportional to 13,939.56, 19,221.84 and 9,959.22 is: 13,733.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.56 : 19,221.84 = 9,959.22 : x
  2. Step 2: Convert to fraction form
    13,939.56/19,221.84 = 9,959.22/x
  3. Step 3: Cross multiply
    13,939.56x = 19,221.84 × 9,959.22
  4. Step 4: Simplify right side
    13,939.56x = 191,434,533.36
  5. Step 5: Solve for x
    x = 191,434,533.36/13,939.56
  6. Step 6: Final answer
    x = 13,733.18

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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.