Home / 21,418.34-29,556.15-11,985.08

Finding the Fourth Proportional to 21,418.34, 29,556.15 and 11,985.08

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Solution

The fourth proportional to 21,418.34, 29,556.15 and 11,985.08 is: 16,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.34 : 29,556.15 = 11,985.08 : x
  2. Step 2: Convert to fraction form
    21,418.34/29,556.15 = 11,985.08/x
  3. Step 3: Cross multiply
    21,418.34x = 29,556.15 × 11,985.08
  4. Step 4: Simplify right side
    21,418.34x = 354,232,822.24
  5. Step 5: Solve for x
    x = 354,232,822.24/21,418.34
  6. Step 6: Final answer
    x = 16,538.76

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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.