Home / 21,219.22-29,270.73-19,717.48

Finding the Fourth Proportional to 21,219.22, 29,270.73 and 19,717.48

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Solution

The fourth proportional to 21,219.22, 29,270.73 and 19,717.48 is: 27,199.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.22 : 29,270.73 = 19,717.48 : x
  2. Step 2: Convert to fraction form
    21,219.22/29,270.73 = 19,717.48/x
  3. Step 3: Cross multiply
    21,219.22x = 29,270.73 × 19,717.48
  4. Step 4: Simplify right side
    21,219.22x = 577,145,033.36
  5. Step 5: Solve for x
    x = 577,145,033.36/21,219.22
  6. Step 6: Final answer
    x = 27,199.16

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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.