Home / 13,767.58-18,991.98-8,722.90

Finding the Fourth Proportional to 13,767.58, 18,991.98 and 8,722.90

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Solution

The fourth proportional to 13,767.58, 18,991.98 and 8,722.90 is: 12,032.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.58 : 18,991.98 = 8,722.90 : x
  2. Step 2: Convert to fraction form
    13,767.58/18,991.98 = 8,722.90/x
  3. Step 3: Cross multiply
    13,767.58x = 18,991.98 × 8,722.90
  4. Step 4: Simplify right side
    13,767.58x = 165,665,142.34
  5. Step 5: Solve for x
    x = 165,665,142.34/13,767.58
  6. Step 6: Final answer
    x = 12,032.99

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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.