Home / 15,636.70-21,578.56-14,365.86

Finding the Fourth Proportional to 15,636.70, 21,578.56 and 14,365.86

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Solution

The fourth proportional to 15,636.70, 21,578.56 and 14,365.86 is: 19,824.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636.70 : 21,578.56 = 14,365.86 : x
  2. Step 2: Convert to fraction form
    15,636.70/21,578.56 = 14,365.86/x
  3. Step 3: Cross multiply
    15,636.70x = 21,578.56 × 14,365.86
  4. Step 4: Simplify right side
    15,636.70x = 309,994,571.96
  5. Step 5: Solve for x
    x = 309,994,571.96/15,636.70
  6. Step 6: Final answer
    x = 19,824.81

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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.