Home / 21,046.91-31,416.35-18,555.84

Finding the Fourth Proportional to 21,046.91, 31,416.35 and 18,555.84

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Solution

The fourth proportional to 21,046.91, 31,416.35 and 18,555.84 is: 27,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.91 : 31,416.35 = 18,555.84 : x
  2. Step 2: Convert to fraction form
    21,046.91/31,416.35 = 18,555.84/x
  3. Step 3: Cross multiply
    21,046.91x = 31,416.35 × 18,555.84
  4. Step 4: Simplify right side
    21,046.91x = 582,956,671.20
  5. Step 5: Solve for x
    x = 582,956,671.20/21,046.91
  6. Step 6: Final answer
    x = 27,697.98

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.