Home / 21,769.37-30,028.95-13,690.22

Finding the Fourth Proportional to 21,769.37, 30,028.95 and 13,690.22

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Solution

The fourth proportional to 21,769.37, 30,028.95 and 13,690.22 is: 18,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.37 : 30,028.95 = 13,690.22 : x
  2. Step 2: Convert to fraction form
    21,769.37/30,028.95 = 13,690.22/x
  3. Step 3: Cross multiply
    21,769.37x = 30,028.95 × 13,690.22
  4. Step 4: Simplify right side
    21,769.37x = 411,103,006.94
  5. Step 5: Solve for x
    x = 411,103,006.94/21,769.37
  6. Step 6: Final answer
    x = 18,884.47

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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.