Home / 15,072.15-20,799.59-9,102.70

Finding the Fourth Proportional to 15,072.15, 20,799.59 and 9,102.70

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Solution

The fourth proportional to 15,072.15, 20,799.59 and 9,102.70 is: 12,561.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.15 : 20,799.59 = 9,102.70 : x
  2. Step 2: Convert to fraction form
    15,072.15/20,799.59 = 9,102.70/x
  3. Step 3: Cross multiply
    15,072.15x = 20,799.59 × 9,102.70
  4. Step 4: Simplify right side
    15,072.15x = 189,332,466.88
  5. Step 5: Solve for x
    x = 189,332,466.88/15,072.15
  6. Step 6: Final answer
    x = 12,561.74

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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.