Home / 21,789.41-30,056.87-13,817.93

Finding the Fourth Proportional to 21,789.41, 30,056.87 and 13,817.93

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Solution

The fourth proportional to 21,789.41, 30,056.87 and 13,817.93 is: 19,060.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.41 : 30,056.87 = 13,817.93 : x
  2. Step 2: Convert to fraction form
    21,789.41/30,056.87 = 13,817.93/x
  3. Step 3: Cross multiply
    21,789.41x = 30,056.87 × 13,817.93
  4. Step 4: Simplify right side
    21,789.41x = 415,323,609.94
  5. Step 5: Solve for x
    x = 415,323,609.94/21,789.41
  6. Step 6: Final answer
    x = 19,060.81

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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.