Home / 21,778.02-30,044.64-14,221.68

Finding the Fourth Proportional to 21,778.02, 30,044.64 and 14,221.68

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Solution

The fourth proportional to 21,778.02, 30,044.64 and 14,221.68 is: 19,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.02 : 30,044.64 = 14,221.68 : x
  2. Step 2: Convert to fraction form
    21,778.02/30,044.64 = 14,221.68/x
  3. Step 3: Cross multiply
    21,778.02x = 30,044.64 × 14,221.68
  4. Step 4: Simplify right side
    21,778.02x = 427,285,255.80
  5. Step 5: Solve for x
    x = 427,285,255.80/21,778.02
  6. Step 6: Final answer
    x = 19,620.02

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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.