Home / 20,211.36-30,323.04-10,357.56

Finding the Fourth Proportional to 20,211.36, 30,323.04 and 10,357.56

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Solution

The fourth proportional to 20,211.36, 30,323.04 and 10,357.56 is: 15,539.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.36 : 30,323.04 = 10,357.56 : x
  2. Step 2: Convert to fraction form
    20,211.36/30,323.04 = 10,357.56/x
  3. Step 3: Cross multiply
    20,211.36x = 30,323.04 × 10,357.56
  4. Step 4: Simplify right side
    20,211.36x = 314,072,706.18
  5. Step 5: Solve for x
    x = 314,072,706.18/20,211.36
  6. Step 6: Final answer
    x = 15,539.41

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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.