Home / 28,120.49-38,804.33-15,544.25

Finding the Fourth Proportional to 28,120.49, 38,804.33 and 15,544.25

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Solution

The fourth proportional to 28,120.49, 38,804.33 and 15,544.25 is: 21,449.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.49 : 38,804.33 = 15,544.25 : x
  2. Step 2: Convert to fraction form
    28,120.49/38,804.33 = 15,544.25/x
  3. Step 3: Cross multiply
    28,120.49x = 38,804.33 × 15,544.25
  4. Step 4: Simplify right side
    28,120.49x = 603,184,128.88
  5. Step 5: Solve for x
    x = 603,184,128.88/28,120.49
  6. Step 6: Final answer
    x = 21,449.99

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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.