Home / 14,420.82-19,900.53-8,135.22

Finding the Fourth Proportional to 14,420.82, 19,900.53 and 8,135.22

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Solution

The fourth proportional to 14,420.82, 19,900.53 and 8,135.22 is: 11,226.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.82 : 19,900.53 = 8,135.22 : x
  2. Step 2: Convert to fraction form
    14,420.82/19,900.53 = 8,135.22/x
  3. Step 3: Cross multiply
    14,420.82x = 19,900.53 × 8,135.22
  4. Step 4: Simplify right side
    14,420.82x = 161,895,189.67
  5. Step 5: Solve for x
    x = 161,895,189.67/14,420.82
  6. Step 6: Final answer
    x = 11,226.49

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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.