Home / 20,690.34-31,013.94-9,587.87

Finding the Fourth Proportional to 20,690.34, 31,013.94 and 9,587.87

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Solution

The fourth proportional to 20,690.34, 31,013.94 and 9,587.87 is: 14,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.34 : 31,013.94 = 9,587.87 : x
  2. Step 2: Convert to fraction form
    20,690.34/31,013.94 = 9,587.87/x
  3. Step 3: Cross multiply
    20,690.34x = 31,013.94 × 9,587.87
  4. Step 4: Simplify right side
    20,690.34x = 297,357,568.16
  5. Step 5: Solve for x
    x = 297,357,568.16/20,690.34
  6. Step 6: Final answer
    x = 14,371.81

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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.