Home / 28,181.73-38,891.22-15,434.68

Finding the Fourth Proportional to 28,181.73, 38,891.22 and 15,434.68

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Solution

The fourth proportional to 28,181.73, 38,891.22 and 15,434.68 is: 21,300.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.73 : 38,891.22 = 15,434.68 : x
  2. Step 2: Convert to fraction form
    28,181.73/38,891.22 = 15,434.68/x
  3. Step 3: Cross multiply
    28,181.73x = 38,891.22 × 15,434.68
  4. Step 4: Simplify right side
    28,181.73x = 600,273,535.51
  5. Step 5: Solve for x
    x = 600,273,535.51/28,181.73
  6. Step 6: Final answer
    x = 21,300.10

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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.