Home / 20,866.47-31,283.46-10,329.22

Finding the Fourth Proportional to 20,866.47, 31,283.46 and 10,329.22

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Solution

The fourth proportional to 20,866.47, 31,283.46 and 10,329.22 is: 15,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.47 : 31,283.46 = 10,329.22 : x
  2. Step 2: Convert to fraction form
    20,866.47/31,283.46 = 10,329.22/x
  3. Step 3: Cross multiply
    20,866.47x = 31,283.46 × 10,329.22
  4. Step 4: Simplify right side
    20,866.47x = 323,133,740.70
  5. Step 5: Solve for x
    x = 323,133,740.70/20,866.47
  6. Step 6: Final answer
    x = 15,485.79

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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.