Home / 28,369.68-39,152.64-15,796.80

Finding the Fourth Proportional to 28,369.68, 39,152.64 and 15,796.80

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Solution

The fourth proportional to 28,369.68, 39,152.64 and 15,796.80 is: 21,800.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.68 : 39,152.64 = 15,796.80 : x
  2. Step 2: Convert to fraction form
    28,369.68/39,152.64 = 15,796.80/x
  3. Step 3: Cross multiply
    28,369.68x = 39,152.64 × 15,796.80
  4. Step 4: Simplify right side
    28,369.68x = 618,486,423.55
  5. Step 5: Solve for x
    x = 618,486,423.55/28,369.68
  6. Step 6: Final answer
    x = 21,800.97

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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.