Home / 19,971.36-29,956.32-6,120

Finding the Fourth Proportional to 19,971.36, 29,956.32 and 6,120

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Solution

The fourth proportional to 19,971.36, 29,956.32 and 6,120 is: 9,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.36 : 29,956.32 = 6,120 : x
  2. Step 2: Convert to fraction form
    19,971.36/29,956.32 = 6,120/x
  3. Step 3: Cross multiply
    19,971.36x = 29,956.32 × 6,120
  4. Step 4: Simplify right side
    19,971.36x = 183,332,678.40
  5. Step 5: Solve for x
    x = 183,332,678.40/19,971.36
  6. Step 6: Final answer
    x = 9,179.78

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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.