Home / 14,258.08-21,371.76-5,490.40

Finding the Fourth Proportional to 14,258.08, 21,371.76 and 5,490.40

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Solution

The fourth proportional to 14,258.08, 21,371.76 and 5,490.40 is: 8,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.08 : 21,371.76 = 5,490.40 : x
  2. Step 2: Convert to fraction form
    14,258.08/21,371.76 = 5,490.40/x
  3. Step 3: Cross multiply
    14,258.08x = 21,371.76 × 5,490.40
  4. Step 4: Simplify right side
    14,258.08x = 117,339,511.10
  5. Step 5: Solve for x
    x = 117,339,511.10/14,258.08
  6. Step 6: Final answer
    x = 8,229.69

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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.