Home / 15,296.52-21,105.99-9,999.12

Finding the Fourth Proportional to 15,296.52, 21,105.99 and 9,999.12

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Solution

The fourth proportional to 15,296.52, 21,105.99 and 9,999.12 is: 13,796.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.52 : 21,105.99 = 9,999.12 : x
  2. Step 2: Convert to fraction form
    15,296.52/21,105.99 = 9,999.12/x
  3. Step 3: Cross multiply
    15,296.52x = 21,105.99 × 9,999.12
  4. Step 4: Simplify right side
    15,296.52x = 211,041,326.73
  5. Step 5: Solve for x
    x = 211,041,326.73/15,296.52
  6. Step 6: Final answer
    x = 13,796.69

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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.