Home / 21,278.26-31,903.68-10,184.68

Finding the Fourth Proportional to 21,278.26, 31,903.68 and 10,184.68

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Solution

The fourth proportional to 21,278.26, 31,903.68 and 10,184.68 is: 15,270.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.26 : 31,903.68 = 10,184.68 : x
  2. Step 2: Convert to fraction form
    21,278.26/31,903.68 = 10,184.68/x
  3. Step 3: Cross multiply
    21,278.26x = 31,903.68 × 10,184.68
  4. Step 4: Simplify right side
    21,278.26x = 324,928,771.62
  5. Step 5: Solve for x
    x = 324,928,771.62/21,278.26
  6. Step 6: Final answer
    x = 15,270.46

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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.