Home / 33,120.64-45,705.28-18,216.32

Finding the Fourth Proportional to 33,120.64, 45,705.28 and 18,216.32

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Solution

The fourth proportional to 33,120.64, 45,705.28 and 18,216.32 is: 25,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.64 : 45,705.28 = 18,216.32 : x
  2. Step 2: Convert to fraction form
    33,120.64/45,705.28 = 18,216.32/x
  3. Step 3: Cross multiply
    33,120.64x = 45,705.28 × 18,216.32
  4. Step 4: Simplify right side
    33,120.64x = 832,582,006.17
  5. Step 5: Solve for x
    x = 832,582,006.17/33,120.64
  6. Step 6: Final answer
    x = 25,137.86

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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.