Home / 21,167.31-29,186.93-13,500.35

Finding the Fourth Proportional to 21,167.31, 29,186.93 and 13,500.35

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Solution

The fourth proportional to 21,167.31, 29,186.93 and 13,500.35 is: 18,615.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.31 : 29,186.93 = 13,500.35 : x
  2. Step 2: Convert to fraction form
    21,167.31/29,186.93 = 13,500.35/x
  3. Step 3: Cross multiply
    21,167.31x = 29,186.93 × 13,500.35
  4. Step 4: Simplify right side
    21,167.31x = 394,033,556.99
  5. Step 5: Solve for x
    x = 394,033,556.99/21,167.31
  6. Step 6: Final answer
    x = 18,615.19

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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.