Home / 28,204.21-38,923.37-15,628.69

Finding the Fourth Proportional to 28,204.21, 38,923.37 and 15,628.69

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Solution

The fourth proportional to 28,204.21, 38,923.37 and 15,628.69 is: 21,568.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.21 : 38,923.37 = 15,628.69 : x
  2. Step 2: Convert to fraction form
    28,204.21/38,923.37 = 15,628.69/x
  3. Step 3: Cross multiply
    28,204.21x = 38,923.37 × 15,628.69
  4. Step 4: Simplify right side
    28,204.21x = 608,321,283.49
  5. Step 5: Solve for x
    x = 608,321,283.49/28,204.21
  6. Step 6: Final answer
    x = 21,568.46

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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.