Home / 28,251.90-42,419.70-15,796.80

Finding the Fourth Proportional to 28,251.90, 42,419.70 and 15,796.80

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Solution

The fourth proportional to 28,251.90, 42,419.70 and 15,796.80 is: 23,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.90 : 42,419.70 = 15,796.80 : x
  2. Step 2: Convert to fraction form
    28,251.90/42,419.70 = 15,796.80/x
  3. Step 3: Cross multiply
    28,251.90x = 42,419.70 × 15,796.80
  4. Step 4: Simplify right side
    28,251.90x = 670,095,516.96
  5. Step 5: Solve for x
    x = 670,095,516.96/28,251.90
  6. Step 6: Final answer
    x = 23,718.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.