Home / 18,118.12-25,052.34-15,785.32

Finding the Fourth Proportional to 18,118.12, 25,052.34 and 15,785.32

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Solution

The fourth proportional to 18,118.12, 25,052.34 and 15,785.32 is: 21,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.12 : 25,052.34 = 15,785.32 : x
  2. Step 2: Convert to fraction form
    18,118.12/25,052.34 = 15,785.32/x
  3. Step 3: Cross multiply
    18,118.12x = 25,052.34 × 15,785.32
  4. Step 4: Simplify right side
    18,118.12x = 395,459,203.65
  5. Step 5: Solve for x
    x = 395,459,203.65/18,118.12
  6. Step 6: Final answer
    x = 21,826.72

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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.