Home / 20,762.65-31,137.90-7,434.10

Finding the Fourth Proportional to 20,762.65, 31,137.90 and 7,434.10

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Solution

The fourth proportional to 20,762.65, 31,137.90 and 7,434.10 is: 11,148.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.65 : 31,137.90 = 7,434.10 : x
  2. Step 2: Convert to fraction form
    20,762.65/31,137.90 = 7,434.10/x
  3. Step 3: Cross multiply
    20,762.65x = 31,137.90 × 7,434.10
  4. Step 4: Simplify right side
    20,762.65x = 231,482,262.39
  5. Step 5: Solve for x
    x = 231,482,262.39/20,762.65
  6. Step 6: Final answer
    x = 11,148.97

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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.