Home / 20,688.63-31,025.39-7,537.11

Finding the Fourth Proportional to 20,688.63, 31,025.39 and 7,537.11

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Solution

The fourth proportional to 20,688.63, 31,025.39 and 7,537.11 is: 11,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.63 : 31,025.39 = 7,537.11 : x
  2. Step 2: Convert to fraction form
    20,688.63/31,025.39 = 7,537.11/x
  3. Step 3: Cross multiply
    20,688.63x = 31,025.39 × 7,537.11
  4. Step 4: Simplify right side
    20,688.63x = 233,841,739.54
  5. Step 5: Solve for x
    x = 233,841,739.54/20,688.63
  6. Step 6: Final answer
    x = 11,302.91

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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.