Home / 28,066.52-38,731.55-15,491

Finding the Fourth Proportional to 28,066.52, 38,731.55 and 15,491

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Solution

The fourth proportional to 28,066.52, 38,731.55 and 15,491 is: 21,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.52 : 38,731.55 = 15,491 : x
  2. Step 2: Convert to fraction form
    28,066.52/38,731.55 = 15,491/x
  3. Step 3: Cross multiply
    28,066.52x = 38,731.55 × 15,491
  4. Step 4: Simplify right side
    28,066.52x = 599,990,441.05
  5. Step 5: Solve for x
    x = 599,990,441.05/28,066.52
  6. Step 6: Final answer
    x = 21,377.44

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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.