Home / 14,419.18-19,900.38-8,453.20

Finding the Fourth Proportional to 14,419.18, 19,900.38 and 8,453.20

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Solution

The fourth proportional to 14,419.18, 19,900.38 and 8,453.20 is: 11,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.18 : 19,900.38 = 8,453.20 : x
  2. Step 2: Convert to fraction form
    14,419.18/19,900.38 = 8,453.20/x
  3. Step 3: Cross multiply
    14,419.18x = 19,900.38 × 8,453.20
  4. Step 4: Simplify right side
    14,419.18x = 168,221,892.22
  5. Step 5: Solve for x
    x = 168,221,892.22/14,419.18
  6. Step 6: Final answer
    x = 11,666.54

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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.