Home / 28,556.86-42,845.53-12,760.57

Finding the Fourth Proportional to 28,556.86, 42,845.53 and 12,760.57

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Solution

The fourth proportional to 28,556.86, 42,845.53 and 12,760.57 is: 19,145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.86 : 42,845.53 = 12,760.57 : x
  2. Step 2: Convert to fraction form
    28,556.86/42,845.53 = 12,760.57/x
  3. Step 3: Cross multiply
    28,556.86x = 42,845.53 × 12,760.57
  4. Step 4: Simplify right side
    28,556.86x = 546,733,170.52
  5. Step 5: Solve for x
    x = 546,733,170.52/28,556.86
  6. Step 6: Final answer
    x = 19,145.43

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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.