Home / 9,916.40-13,686.90-5,939.84

Finding the Fourth Proportional to 9,916.40, 13,686.90 and 5,939.84

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Solution

The fourth proportional to 9,916.40, 13,686.90 and 5,939.84 is: 8,198.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.40 : 13,686.90 = 5,939.84 : x
  2. Step 2: Convert to fraction form
    9,916.40/13,686.90 = 5,939.84/x
  3. Step 3: Cross multiply
    9,916.40x = 13,686.90 × 5,939.84
  4. Step 4: Simplify right side
    9,916.40x = 81,297,996.10
  5. Step 5: Solve for x
    x = 81,297,996.10/9,916.40
  6. Step 6: Final answer
    x = 8,198.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.