Home / 21,657.72-29,889.39-17,218.11

Finding the Fourth Proportional to 21,657.72, 29,889.39 and 17,218.11

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Solution

The fourth proportional to 21,657.72, 29,889.39 and 17,218.11 is: 23,762.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.72 : 29,889.39 = 17,218.11 : x
  2. Step 2: Convert to fraction form
    21,657.72/29,889.39 = 17,218.11/x
  3. Step 3: Cross multiply
    21,657.72x = 29,889.39 × 17,218.11
  4. Step 4: Simplify right side
    21,657.72x = 514,638,804.85
  5. Step 5: Solve for x
    x = 514,638,804.85/21,657.72
  6. Step 6: Final answer
    x = 23,762.37

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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.