Home / 15,087.44-20,820.72-8,373.20

Finding the Fourth Proportional to 15,087.44, 20,820.72 and 8,373.20

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Solution

The fourth proportional to 15,087.44, 20,820.72 and 8,373.20 is: 11,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.44 : 20,820.72 = 8,373.20 : x
  2. Step 2: Convert to fraction form
    15,087.44/20,820.72 = 8,373.20/x
  3. Step 3: Cross multiply
    15,087.44x = 20,820.72 × 8,373.20
  4. Step 4: Simplify right side
    15,087.44x = 174,336,052.70
  5. Step 5: Solve for x
    x = 174,336,052.70/15,087.44
  6. Step 6: Final answer
    x = 11,555.05

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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.