Home / 21,767.81-30,041.11-12,080.44

Finding the Fourth Proportional to 21,767.81, 30,041.11 and 12,080.44

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Solution

The fourth proportional to 21,767.81, 30,041.11 and 12,080.44 is: 16,671.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.81 : 30,041.11 = 12,080.44 : x
  2. Step 2: Convert to fraction form
    21,767.81/30,041.11 = 12,080.44/x
  3. Step 3: Cross multiply
    21,767.81x = 30,041.11 × 12,080.44
  4. Step 4: Simplify right side
    21,767.81x = 362,909,879.54
  5. Step 5: Solve for x
    x = 362,909,879.54/21,767.81
  6. Step 6: Final answer
    x = 16,671.86

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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.