Home / 14,639.12-20,200.43-10,812.78

Finding the Fourth Proportional to 14,639.12, 20,200.43 and 10,812.78

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Solution

The fourth proportional to 14,639.12, 20,200.43 and 10,812.78 is: 14,920.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.12 : 20,200.43 = 10,812.78 : x
  2. Step 2: Convert to fraction form
    14,639.12/20,200.43 = 10,812.78/x
  3. Step 3: Cross multiply
    14,639.12x = 20,200.43 × 10,812.78
  4. Step 4: Simplify right side
    14,639.12x = 218,422,751.43
  5. Step 5: Solve for x
    x = 218,422,751.43/14,639.12
  6. Step 6: Final answer
    x = 14,920.49

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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.