Home / 13,458-20,205.56-9,288.12

Finding the Fourth Proportional to 13,458, 20,205.56 and 9,288.12

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Solution

The fourth proportional to 13,458, 20,205.56 and 9,288.12 is: 13,944.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458 : 20,205.56 = 9,288.12 : x
  2. Step 2: Convert to fraction form
    13,458/20,205.56 = 9,288.12/x
  3. Step 3: Cross multiply
    13,458x = 20,205.56 × 9,288.12
  4. Step 4: Simplify right side
    13,458x = 187,671,665.95
  5. Step 5: Solve for x
    x = 187,671,665.95/13,458
  6. Step 6: Final answer
    x = 13,944.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.