Home / 21,453.45-29,605.77-13,069.95

Finding the Fourth Proportional to 21,453.45, 29,605.77 and 13,069.95

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Solution

The fourth proportional to 21,453.45, 29,605.77 and 13,069.95 is: 18,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.45 : 29,605.77 = 13,069.95 : x
  2. Step 2: Convert to fraction form
    21,453.45/29,605.77 = 13,069.95/x
  3. Step 3: Cross multiply
    21,453.45x = 29,605.77 × 13,069.95
  4. Step 4: Simplify right side
    21,453.45x = 386,945,933.61
  5. Step 5: Solve for x
    x = 386,945,933.61/21,453.45
  6. Step 6: Final answer
    x = 18,036.54

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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.