Home / 13,990.17-19,308.17-8,021.73

Finding the Fourth Proportional to 13,990.17, 19,308.17 and 8,021.73

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Solution

The fourth proportional to 13,990.17, 19,308.17 and 8,021.73 is: 11,070.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.17 : 19,308.17 = 8,021.73 : x
  2. Step 2: Convert to fraction form
    13,990.17/19,308.17 = 8,021.73/x
  3. Step 3: Cross multiply
    13,990.17x = 19,308.17 × 8,021.73
  4. Step 4: Simplify right side
    13,990.17x = 154,885,018.99
  5. Step 5: Solve for x
    x = 154,885,018.99/13,990.17
  6. Step 6: Final answer
    x = 11,070.99

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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.