Home / 21,422.26-29,556.91-13,032.82

Finding the Fourth Proportional to 21,422.26, 29,556.91 and 13,032.82

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Solution

The fourth proportional to 21,422.26, 29,556.91 and 13,032.82 is: 17,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.26 : 29,556.91 = 13,032.82 : x
  2. Step 2: Convert to fraction form
    21,422.26/29,556.91 = 13,032.82/x
  3. Step 3: Cross multiply
    21,422.26x = 29,556.91 × 13,032.82
  4. Step 4: Simplify right side
    21,422.26x = 385,209,887.79
  5. Step 5: Solve for x
    x = 385,209,887.79/21,422.26
  6. Step 6: Final answer
    x = 17,981.76

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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.