Home / 13,980.56-19,292.44-7,691.72

Finding the Fourth Proportional to 13,980.56, 19,292.44 and 7,691.72

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Solution

The fourth proportional to 13,980.56, 19,292.44 and 7,691.72 is: 10,614.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.56 : 19,292.44 = 7,691.72 : x
  2. Step 2: Convert to fraction form
    13,980.56/19,292.44 = 7,691.72/x
  3. Step 3: Cross multiply
    13,980.56x = 19,292.44 × 7,691.72
  4. Step 4: Simplify right side
    13,980.56x = 148,392,046.60
  5. Step 5: Solve for x
    x = 148,392,046.60/13,980.56
  6. Step 6: Final answer
    x = 10,614.17

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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.