Home / 28,778.34-43,147.40-12,759.16

Finding the Fourth Proportional to 28,778.34, 43,147.40 and 12,759.16

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Solution

The fourth proportional to 28,778.34, 43,147.40 and 12,759.16 is: 19,129.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.34 : 43,147.40 = 12,759.16 : x
  2. Step 2: Convert to fraction form
    28,778.34/43,147.40 = 12,759.16/x
  3. Step 3: Cross multiply
    28,778.34x = 43,147.40 × 12,759.16
  4. Step 4: Simplify right side
    28,778.34x = 550,524,580.18
  5. Step 5: Solve for x
    x = 550,524,580.18/28,778.34
  6. Step 6: Final answer
    x = 19,129.82

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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.