Home / 19,971.36-29,961.36-6,120

Finding the Fourth Proportional to 19,971.36, 29,961.36 and 6,120

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Solution

The fourth proportional to 19,971.36, 29,961.36 and 6,120 is: 9,181.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.36 : 29,961.36 = 6,120 : x
  2. Step 2: Convert to fraction form
    19,971.36/29,961.36 = 6,120/x
  3. Step 3: Cross multiply
    19,971.36x = 29,961.36 × 6,120
  4. Step 4: Simplify right side
    19,971.36x = 183,363,523.20
  5. Step 5: Solve for x
    x = 183,363,523.20/19,971.36
  6. Step 6: Final answer
    x = 9,181.32

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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.