Home / 28,536.94-42,815.56-12,740.54

Finding the Fourth Proportional to 28,536.94, 42,815.56 and 12,740.54

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Solution

The fourth proportional to 28,536.94, 42,815.56 and 12,740.54 is: 19,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.94 : 42,815.56 = 12,740.54 : x
  2. Step 2: Convert to fraction form
    28,536.94/42,815.56 = 12,740.54/x
  3. Step 3: Cross multiply
    28,536.94x = 42,815.56 × 12,740.54
  4. Step 4: Simplify right side
    28,536.94x = 545,493,354.80
  5. Step 5: Solve for x
    x = 545,493,354.80/28,536.94
  6. Step 6: Final answer
    x = 19,115.34

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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.