Home / 21,585.05-29,727.79-18,599.79

Finding the Fourth Proportional to 21,585.05, 29,727.79 and 18,599.79

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Solution

The fourth proportional to 21,585.05, 29,727.79 and 18,599.79 is: 25,616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.05 : 29,727.79 = 18,599.79 : x
  2. Step 2: Convert to fraction form
    21,585.05/29,727.79 = 18,599.79/x
  3. Step 3: Cross multiply
    21,585.05x = 29,727.79 × 18,599.79
  4. Step 4: Simplify right side
    21,585.05x = 552,930,651.16
  5. Step 5: Solve for x
    x = 552,930,651.16/21,585.05
  6. Step 6: Final answer
    x = 25,616.38

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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.