Home / 13,137.09-18,123.12-8,882.70

Finding the Fourth Proportional to 13,137.09, 18,123.12 and 8,882.70

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Solution

The fourth proportional to 13,137.09, 18,123.12 and 8,882.70 is: 12,254.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.09 : 18,123.12 = 8,882.70 : x
  2. Step 2: Convert to fraction form
    13,137.09/18,123.12 = 8,882.70/x
  3. Step 3: Cross multiply
    13,137.09x = 18,123.12 × 8,882.70
  4. Step 4: Simplify right side
    13,137.09x = 160,982,238.02
  5. Step 5: Solve for x
    x = 160,982,238.02/13,137.09
  6. Step 6: Final answer
    x = 12,254.03

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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.