Home / 21,812.44-30,100.84-12,860.32

Finding the Fourth Proportional to 21,812.44, 30,100.84 and 12,860.32

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Solution

The fourth proportional to 21,812.44, 30,100.84 and 12,860.32 is: 17,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.44 : 30,100.84 = 12,860.32 : x
  2. Step 2: Convert to fraction form
    21,812.44/30,100.84 = 12,860.32/x
  3. Step 3: Cross multiply
    21,812.44x = 30,100.84 × 12,860.32
  4. Step 4: Simplify right side
    21,812.44x = 387,106,434.67
  5. Step 5: Solve for x
    x = 387,106,434.67/21,812.44
  6. Step 6: Final answer
    x = 17,747.05

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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.