Home / 21,417.77-29,556.56-11,986.34

Finding the Fourth Proportional to 21,417.77, 29,556.56 and 11,986.34

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Solution

The fourth proportional to 21,417.77, 29,556.56 and 11,986.34 is: 16,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.77 : 29,556.56 = 11,986.34 : x
  2. Step 2: Convert to fraction form
    21,417.77/29,556.56 = 11,986.34/x
  3. Step 3: Cross multiply
    21,417.77x = 29,556.56 × 11,986.34
  4. Step 4: Simplify right side
    21,417.77x = 354,274,859.57
  5. Step 5: Solve for x
    x = 354,274,859.57/21,417.77
  6. Step 6: Final answer
    x = 16,541.16

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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.