Home / 38,160.78-52,661.52-21,165.90

Finding the Fourth Proportional to 38,160.78, 52,661.52 and 21,165.90

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Solution

The fourth proportional to 38,160.78, 52,661.52 and 21,165.90 is: 29,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,160.78 : 52,661.52 = 21,165.90 : x
  2. Step 2: Convert to fraction form
    38,160.78/52,661.52 = 21,165.90/x
  3. Step 3: Cross multiply
    38,160.78x = 52,661.52 × 21,165.90
  4. Step 4: Simplify right side
    38,160.78x = 1,114,628,466.17
  5. Step 5: Solve for x
    x = 1,114,628,466.17/38,160.78
  6. Step 6: Final answer
    x = 29,208.74

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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.