Home / 28,531.95-42,808.05-12,735.54

Finding the Fourth Proportional to 28,531.95, 42,808.05 and 12,735.54

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Solution

The fourth proportional to 28,531.95, 42,808.05 and 12,735.54 is: 19,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.95 : 42,808.05 = 12,735.54 : x
  2. Step 2: Convert to fraction form
    28,531.95/42,808.05 = 12,735.54/x
  3. Step 3: Cross multiply
    28,531.95x = 42,808.05 × 12,735.54
  4. Step 4: Simplify right side
    28,531.95x = 545,183,633.10
  5. Step 5: Solve for x
    x = 545,183,633.10/28,531.95
  6. Step 6: Final answer
    x = 19,107.83

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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.