Home / 21,684.08-29,907.52-18,664.34

Finding the Fourth Proportional to 21,684.08, 29,907.52 and 18,664.34

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Solution

The fourth proportional to 21,684.08, 29,907.52 and 18,664.34 is: 25,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.08 : 29,907.52 = 18,664.34 : x
  2. Step 2: Convert to fraction form
    21,684.08/29,907.52 = 18,664.34/x
  3. Step 3: Cross multiply
    21,684.08x = 29,907.52 × 18,664.34
  4. Step 4: Simplify right side
    21,684.08x = 558,204,095.13
  5. Step 5: Solve for x
    x = 558,204,095.13/21,684.08
  6. Step 6: Final answer
    x = 25,742.58

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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.