Home / 21,618.14-29,830.38-12,055.79

Finding the Fourth Proportional to 21,618.14, 29,830.38 and 12,055.79

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Solution

The fourth proportional to 21,618.14, 29,830.38 and 12,055.79 is: 16,635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.14 : 29,830.38 = 12,055.79 : x
  2. Step 2: Convert to fraction form
    21,618.14/29,830.38 = 12,055.79/x
  3. Step 3: Cross multiply
    21,618.14x = 29,830.38 × 12,055.79
  4. Step 4: Simplify right side
    21,618.14x = 359,628,844.09
  5. Step 5: Solve for x
    x = 359,628,844.09/21,618.14
  6. Step 6: Final answer
    x = 16,635.51

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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.