Home / 21,244.05-31,822.32-12,457.77

Finding the Fourth Proportional to 21,244.05, 31,822.32 and 12,457.77

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Solution

The fourth proportional to 21,244.05, 31,822.32 and 12,457.77 is: 18,661.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.05 : 31,822.32 = 12,457.77 : x
  2. Step 2: Convert to fraction form
    21,244.05/31,822.32 = 12,457.77/x
  3. Step 3: Cross multiply
    21,244.05x = 31,822.32 × 12,457.77
  4. Step 4: Simplify right side
    21,244.05x = 396,435,143.43
  5. Step 5: Solve for x
    x = 396,435,143.43/21,244.05
  6. Step 6: Final answer
    x = 18,661.00

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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.