Home / 14,419.12-19,898.38-8,131.50

Finding the Fourth Proportional to 14,419.12, 19,898.38 and 8,131.50

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Solution

The fourth proportional to 14,419.12, 19,898.38 and 8,131.50 is: 11,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.12 : 19,898.38 = 8,131.50 : x
  2. Step 2: Convert to fraction form
    14,419.12/19,898.38 = 8,131.50/x
  3. Step 3: Cross multiply
    14,419.12x = 19,898.38 × 8,131.50
  4. Step 4: Simplify right side
    14,419.12x = 161,803,676.97
  5. Step 5: Solve for x
    x = 161,803,676.97/14,419.12
  6. Step 6: Final answer
    x = 11,221.47

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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.