Home / 21,600.08-29,790.49-18,137.30

Finding the Fourth Proportional to 21,600.08, 29,790.49 and 18,137.30

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Solution

The fourth proportional to 21,600.08, 29,790.49 and 18,137.30 is: 25,014.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.08 : 29,790.49 = 18,137.30 : x
  2. Step 2: Convert to fraction form
    21,600.08/29,790.49 = 18,137.30/x
  3. Step 3: Cross multiply
    21,600.08x = 29,790.49 × 18,137.30
  4. Step 4: Simplify right side
    21,600.08x = 540,319,054.28
  5. Step 5: Solve for x
    x = 540,319,054.28/21,600.08
  6. Step 6: Final answer
    x = 25,014.68

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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.