Home / 9,919.71-13,688.49-5,443.38

Finding the Fourth Proportional to 9,919.71, 13,688.49 and 5,443.38

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Solution

The fourth proportional to 9,919.71, 13,688.49 and 5,443.38 is: 7,511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.71 : 13,688.49 = 5,443.38 : x
  2. Step 2: Convert to fraction form
    9,919.71/13,688.49 = 5,443.38/x
  3. Step 3: Cross multiply
    9,919.71x = 13,688.49 × 5,443.38
  4. Step 4: Simplify right side
    9,919.71x = 74,511,652.70
  5. Step 5: Solve for x
    x = 74,511,652.70/9,919.71
  6. Step 6: Final answer
    x = 7,511.47

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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.