Home / 21,255.36-29,353.62-17,515.59

Finding the Fourth Proportional to 21,255.36, 29,353.62 and 17,515.59

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Solution

The fourth proportional to 21,255.36, 29,353.62 and 17,515.59 is: 24,189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.36 : 29,353.62 = 17,515.59 : x
  2. Step 2: Convert to fraction form
    21,255.36/29,353.62 = 17,515.59/x
  3. Step 3: Cross multiply
    21,255.36x = 29,353.62 × 17,515.59
  4. Step 4: Simplify right side
    21,255.36x = 514,145,972.94
  5. Step 5: Solve for x
    x = 514,145,972.94/21,255.36
  6. Step 6: Final answer
    x = 24,189.00

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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.