Home / 9,916.45-13,684.68-5,724.70

Finding the Fourth Proportional to 9,916.45, 13,684.68 and 5,724.70

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Solution

The fourth proportional to 9,916.45, 13,684.68 and 5,724.70 is: 7,900.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.45 : 13,684.68 = 5,724.70 : x
  2. Step 2: Convert to fraction form
    9,916.45/13,684.68 = 5,724.70/x
  3. Step 3: Cross multiply
    9,916.45x = 13,684.68 × 5,724.70
  4. Step 4: Simplify right side
    9,916.45x = 78,340,687.60
  5. Step 5: Solve for x
    x = 78,340,687.60/9,916.45
  6. Step 6: Final answer
    x = 7,900.07

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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.