Home / 20,185.10-30,277.65-10,343.60

Finding the Fourth Proportional to 20,185.10, 30,277.65 and 10,343.60

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Solution

The fourth proportional to 20,185.10, 30,277.65 and 10,343.60 is: 15,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.10 : 30,277.65 = 10,343.60 : x
  2. Step 2: Convert to fraction form
    20,185.10/30,277.65 = 10,343.60/x
  3. Step 3: Cross multiply
    20,185.10x = 30,277.65 × 10,343.60
  4. Step 4: Simplify right side
    20,185.10x = 313,179,900.54
  5. Step 5: Solve for x
    x = 313,179,900.54/20,185.10
  6. Step 6: Final answer
    x = 15,515.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.