Home / 13,665.38-20,498.06-4,431.38

Finding the Fourth Proportional to 13,665.38, 20,498.06 and 4,431.38

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Solution

The fourth proportional to 13,665.38, 20,498.06 and 4,431.38 is: 6,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.38 : 20,498.06 = 4,431.38 : x
  2. Step 2: Convert to fraction form
    13,665.38/20,498.06 = 4,431.38/x
  3. Step 3: Cross multiply
    13,665.38x = 20,498.06 × 4,431.38
  4. Step 4: Simplify right side
    13,665.38x = 90,834,601.71
  5. Step 5: Solve for x
    x = 90,834,601.71/13,665.38
  6. Step 6: Final answer
    x = 6,647.06

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1.5x scale

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.