Home / 28,401.96-39,194.98-15,655.60

Finding the Fourth Proportional to 28,401.96, 39,194.98 and 15,655.60

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Solution

The fourth proportional to 28,401.96, 39,194.98 and 15,655.60 is: 21,604.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.96 : 39,194.98 = 15,655.60 : x
  2. Step 2: Convert to fraction form
    28,401.96/39,194.98 = 15,655.60/x
  3. Step 3: Cross multiply
    28,401.96x = 39,194.98 × 15,655.60
  4. Step 4: Simplify right side
    28,401.96x = 613,620,928.89
  5. Step 5: Solve for x
    x = 613,620,928.89/28,401.96
  6. Step 6: Final answer
    x = 21,604.88

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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.