Home / 21,165.52-29,208.50-11,605.56

Finding the Fourth Proportional to 21,165.52, 29,208.50 and 11,605.56

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Solution

The fourth proportional to 21,165.52, 29,208.50 and 11,605.56 is: 16,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.52 : 29,208.50 = 11,605.56 : x
  2. Step 2: Convert to fraction form
    21,165.52/29,208.50 = 11,605.56/x
  3. Step 3: Cross multiply
    21,165.52x = 29,208.50 × 11,605.56
  4. Step 4: Simplify right side
    21,165.52x = 338,980,795.19
  5. Step 5: Solve for x
    x = 338,980,795.19/21,165.52
  6. Step 6: Final answer
    x = 16,015.71

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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.