Home / 20,731.23-31,072.50-9,614.51

Finding the Fourth Proportional to 20,731.23, 31,072.50 and 9,614.51

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Solution

The fourth proportional to 20,731.23, 31,072.50 and 9,614.51 is: 14,410.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.23 : 31,072.50 = 9,614.51 : x
  2. Step 2: Convert to fraction form
    20,731.23/31,072.50 = 9,614.51/x
  3. Step 3: Cross multiply
    20,731.23x = 31,072.50 × 9,614.51
  4. Step 4: Simplify right side
    20,731.23x = 298,746,823.13
  5. Step 5: Solve for x
    x = 298,746,823.13/20,731.23
  6. Step 6: Final answer
    x = 14,410.47

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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.