Home / 21,349.76-31,884.48-18,196.16

Finding the Fourth Proportional to 21,349.76, 31,884.48 and 18,196.16

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Solution

The fourth proportional to 21,349.76, 31,884.48 and 18,196.16 is: 27,174.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.76 : 31,884.48 = 18,196.16 : x
  2. Step 2: Convert to fraction form
    21,349.76/31,884.48 = 18,196.16/x
  3. Step 3: Cross multiply
    21,349.76x = 31,884.48 × 18,196.16
  4. Step 4: Simplify right side
    21,349.76x = 580,175,099.60
  5. Step 5: Solve for x
    x = 580,175,099.60/21,349.76
  6. Step 6: Final answer
    x = 27,174.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.