Home / 28,066.32-38,731.58-15,491.07

Finding the Fourth Proportional to 28,066.32, 38,731.58 and 15,491.07

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Solution

The fourth proportional to 28,066.32, 38,731.58 and 15,491.07 is: 21,377.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.32 : 38,731.58 = 15,491.07 : x
  2. Step 2: Convert to fraction form
    28,066.32/38,731.58 = 15,491.07/x
  3. Step 3: Cross multiply
    28,066.32x = 38,731.58 × 15,491.07
  4. Step 4: Simplify right side
    28,066.32x = 599,993,539.54
  5. Step 5: Solve for x
    x = 599,993,539.54/28,066.32
  6. Step 6: Final answer
    x = 21,377.71

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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.