Home / 15,640.58-21,584.28-8,566.55

Finding the Fourth Proportional to 15,640.58, 21,584.28 and 8,566.55

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Solution

The fourth proportional to 15,640.58, 21,584.28 and 8,566.55 is: 11,821.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.58 : 21,584.28 = 8,566.55 : x
  2. Step 2: Convert to fraction form
    15,640.58/21,584.28 = 8,566.55/x
  3. Step 3: Cross multiply
    15,640.58x = 21,584.28 × 8,566.55
  4. Step 4: Simplify right side
    15,640.58x = 184,902,705.91
  5. Step 5: Solve for x
    x = 184,902,705.91/15,640.58
  6. Step 6: Final answer
    x = 11,821.99

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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.