Home / 21,161.82-29,203.02-11,730.18

Finding the Fourth Proportional to 21,161.82, 29,203.02 and 11,730.18

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Solution

The fourth proportional to 21,161.82, 29,203.02 and 11,730.18 is: 16,187.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.82 : 29,203.02 = 11,730.18 : x
  2. Step 2: Convert to fraction form
    21,161.82/29,203.02 = 11,730.18/x
  3. Step 3: Cross multiply
    21,161.82x = 29,203.02 × 11,730.18
  4. Step 4: Simplify right side
    21,161.82x = 342,556,681.14
  5. Step 5: Solve for x
    x = 342,556,681.14/21,161.82
  6. Step 6: Final answer
    x = 16,187.49

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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.