Home / 28,139.05-38,813.45-16,799.69

Finding the Fourth Proportional to 28,139.05, 38,813.45 and 16,799.69

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Solution

The fourth proportional to 28,139.05, 38,813.45 and 16,799.69 is: 23,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.05 : 38,813.45 = 16,799.69 : x
  2. Step 2: Convert to fraction form
    28,139.05/38,813.45 = 16,799.69/x
  3. Step 3: Cross multiply
    28,139.05x = 38,813.45 × 16,799.69
  4. Step 4: Simplify right side
    28,139.05x = 652,053,775.76
  5. Step 5: Solve for x
    x = 652,053,775.76/28,139.05
  6. Step 6: Final answer
    x = 23,172.56

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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.