Home / 21,879.02-30,193.23-12,448.19

Finding the Fourth Proportional to 21,879.02, 30,193.23 and 12,448.19

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Solution

The fourth proportional to 21,879.02, 30,193.23 and 12,448.19 is: 17,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.02 : 30,193.23 = 12,448.19 : x
  2. Step 2: Convert to fraction form
    21,879.02/30,193.23 = 12,448.19/x
  3. Step 3: Cross multiply
    21,879.02x = 30,193.23 × 12,448.19
  4. Step 4: Simplify right side
    21,879.02x = 375,850,850.55
  5. Step 5: Solve for x
    x = 375,850,850.55/21,879.02
  6. Step 6: Final answer
    x = 17,178.60

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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.