Home / 28,609.44-42,896.76-12,811.56

Finding the Fourth Proportional to 28,609.44, 42,896.76 and 12,811.56

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Solution

The fourth proportional to 28,609.44, 42,896.76 and 12,811.56 is: 19,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.44 : 42,896.76 = 12,811.56 : x
  2. Step 2: Convert to fraction form
    28,609.44/42,896.76 = 12,811.56/x
  3. Step 3: Cross multiply
    28,609.44x = 42,896.76 × 12,811.56
  4. Step 4: Simplify right side
    28,609.44x = 549,574,414.55
  5. Step 5: Solve for x
    x = 549,574,414.55/28,609.44
  6. Step 6: Final answer
    x = 19,209.55

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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.