Home / 21,206.05-29,238.62-18,329.58

Finding the Fourth Proportional to 21,206.05, 29,238.62 and 18,329.58

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Solution

The fourth proportional to 21,206.05, 29,238.62 and 18,329.58 is: 25,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.05 : 29,238.62 = 18,329.58 : x
  2. Step 2: Convert to fraction form
    21,206.05/29,238.62 = 18,329.58/x
  3. Step 3: Cross multiply
    21,206.05x = 29,238.62 × 18,329.58
  4. Step 4: Simplify right side
    21,206.05x = 535,931,532.73
  5. Step 5: Solve for x
    x = 535,931,532.73/21,206.05
  6. Step 6: Final answer
    x = 25,272.58

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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.