Home / 15,553.81-21,464.36-8,480.35

Finding the Fourth Proportional to 15,553.81, 21,464.36 and 8,480.35

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Solution

The fourth proportional to 15,553.81, 21,464.36 and 8,480.35 is: 11,702.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.81 : 21,464.36 = 8,480.35 : x
  2. Step 2: Convert to fraction form
    15,553.81/21,464.36 = 8,480.35/x
  3. Step 3: Cross multiply
    15,553.81x = 21,464.36 × 8,480.35
  4. Step 4: Simplify right side
    15,553.81x = 182,025,285.33
  5. Step 5: Solve for x
    x = 182,025,285.33/15,553.81
  6. Step 6: Final answer
    x = 11,702.94

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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.