Home / 21,161.04-29,201.80-11,729.52

Finding the Fourth Proportional to 21,161.04, 29,201.80 and 11,729.52

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Solution

The fourth proportional to 21,161.04, 29,201.80 and 11,729.52 is: 16,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.04 : 29,201.80 = 11,729.52 : x
  2. Step 2: Convert to fraction form
    21,161.04/29,201.80 = 11,729.52/x
  3. Step 3: Cross multiply
    21,161.04x = 29,201.80 × 11,729.52
  4. Step 4: Simplify right side
    21,161.04x = 342,523,097.14
  5. Step 5: Solve for x
    x = 342,523,097.14/21,161.04
  6. Step 6: Final answer
    x = 16,186.50

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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.