Home / 22,276.81-30,730.86-13,321.96

Finding the Fourth Proportional to 22,276.81, 30,730.86 and 13,321.96

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Solution

The fourth proportional to 22,276.81, 30,730.86 and 13,321.96 is: 18,377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,276.81 : 30,730.86 = 13,321.96 : x
  2. Step 2: Convert to fraction form
    22,276.81/30,730.86 = 13,321.96/x
  3. Step 3: Cross multiply
    22,276.81x = 30,730.86 × 13,321.96
  4. Step 4: Simplify right side
    22,276.81x = 409,395,287.69
  5. Step 5: Solve for x
    x = 409,395,287.69/22,276.81
  6. Step 6: Final answer
    x = 18,377.64

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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.