Home / 13,137.44-18,123.87-8,886.98

Finding the Fourth Proportional to 13,137.44, 18,123.87 and 8,886.98

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Solution

The fourth proportional to 13,137.44, 18,123.87 and 8,886.98 is: 12,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.44 : 18,123.87 = 8,886.98 : x
  2. Step 2: Convert to fraction form
    13,137.44/18,123.87 = 8,886.98/x
  3. Step 3: Cross multiply
    13,137.44x = 18,123.87 × 8,886.98
  4. Step 4: Simplify right side
    13,137.44x = 161,066,470.21
  5. Step 5: Solve for x
    x = 161,066,470.21/13,137.44
  6. Step 6: Final answer
    x = 12,260.11

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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.