Home / 21,417.84-29,556.68-11,985.68

Finding the Fourth Proportional to 21,417.84, 29,556.68 and 11,985.68

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Solution

The fourth proportional to 21,417.84, 29,556.68 and 11,985.68 is: 16,540.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.84 : 29,556.68 = 11,985.68 : x
  2. Step 2: Convert to fraction form
    21,417.84/29,556.68 = 11,985.68/x
  3. Step 3: Cross multiply
    21,417.84x = 29,556.68 × 11,985.68
  4. Step 4: Simplify right side
    21,417.84x = 354,256,908.34
  5. Step 5: Solve for x
    x = 354,256,908.34/21,417.84
  6. Step 6: Final answer
    x = 16,540.27

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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.