Home / 21,056.76-31,549.44-12,719.25

Finding the Fourth Proportional to 21,056.76, 31,549.44 and 12,719.25

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Solution

The fourth proportional to 21,056.76, 31,549.44 and 12,719.25 is: 19,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.76 : 31,549.44 = 12,719.25 : x
  2. Step 2: Convert to fraction form
    21,056.76/31,549.44 = 12,719.25/x
  3. Step 3: Cross multiply
    21,056.76x = 31,549.44 × 12,719.25
  4. Step 4: Simplify right side
    21,056.76x = 401,285,214.72
  5. Step 5: Solve for x
    x = 401,285,214.72/21,056.76
  6. Step 6: Final answer
    x = 19,057.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.