Home / 15,072.41-20,800.43-9,102.89

Finding the Fourth Proportional to 15,072.41, 20,800.43 and 9,102.89

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Solution

The fourth proportional to 15,072.41, 20,800.43 and 9,102.89 is: 12,562.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.41 : 20,800.43 = 9,102.89 : x
  2. Step 2: Convert to fraction form
    15,072.41/20,800.43 = 9,102.89/x
  3. Step 3: Cross multiply
    15,072.41x = 20,800.43 × 9,102.89
  4. Step 4: Simplify right side
    15,072.41x = 189,344,026.24
  5. Step 5: Solve for x
    x = 189,344,026.24/15,072.41
  6. Step 6: Final answer
    x = 12,562.29

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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.