Home / 13,781.06-20,671.59-4,422.05

Finding the Fourth Proportional to 13,781.06, 20,671.59 and 4,422.05

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Solution

The fourth proportional to 13,781.06, 20,671.59 and 4,422.05 is: 6,633.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.06 : 20,671.59 = 4,422.05 : x
  2. Step 2: Convert to fraction form
    13,781.06/20,671.59 = 4,422.05/x
  3. Step 3: Cross multiply
    13,781.06x = 20,671.59 × 4,422.05
  4. Step 4: Simplify right side
    13,781.06x = 91,410,701.20
  5. Step 5: Solve for x
    x = 91,410,701.20/13,781.06
  6. Step 6: Final answer
    x = 6,633.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.