Home / 28,405.36-39,199.44-15,829.84

Finding the Fourth Proportional to 28,405.36, 39,199.44 and 15,829.84

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Solution

The fourth proportional to 28,405.36, 39,199.44 and 15,829.84 is: 21,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.36 : 39,199.44 = 15,829.84 : x
  2. Step 2: Convert to fraction form
    28,405.36/39,199.44 = 15,829.84/x
  3. Step 3: Cross multiply
    28,405.36x = 39,199.44 × 15,829.84
  4. Step 4: Simplify right side
    28,405.36x = 620,520,863.29
  5. Step 5: Solve for x
    x = 620,520,863.29/28,405.36
  6. Step 6: Final answer
    x = 21,845.20

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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.