Home / 28,551.37-39,399.88-15,804.58

Finding the Fourth Proportional to 28,551.37, 39,399.88 and 15,804.58

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Solution

The fourth proportional to 28,551.37, 39,399.88 and 15,804.58 is: 21,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.37 : 39,399.88 = 15,804.58 : x
  2. Step 2: Convert to fraction form
    28,551.37/39,399.88 = 15,804.58/x
  3. Step 3: Cross multiply
    28,551.37x = 39,399.88 × 15,804.58
  4. Step 4: Simplify right side
    28,551.37x = 622,698,279.43
  5. Step 5: Solve for x
    x = 622,698,279.43/28,551.37
  6. Step 6: Final answer
    x = 21,809.76

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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.