Home / 21,225.76-29,291.73-13,272.60

Finding the Fourth Proportional to 21,225.76, 29,291.73 and 13,272.60

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Solution

The fourth proportional to 21,225.76, 29,291.73 and 13,272.60 is: 18,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.76 : 29,291.73 = 13,272.60 : x
  2. Step 2: Convert to fraction form
    21,225.76/29,291.73 = 13,272.60/x
  3. Step 3: Cross multiply
    21,225.76x = 29,291.73 × 13,272.60
  4. Step 4: Simplify right side
    21,225.76x = 388,777,202.78
  5. Step 5: Solve for x
    x = 388,777,202.78/21,225.76
  6. Step 6: Final answer
    x = 18,316.29

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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.