Home / 28,639.56-42,918.36-12,609.84

Finding the Fourth Proportional to 28,639.56, 42,918.36 and 12,609.84

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Solution

The fourth proportional to 28,639.56, 42,918.36 and 12,609.84 is: 18,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.56 : 42,918.36 = 12,609.84 : x
  2. Step 2: Convert to fraction form
    28,639.56/42,918.36 = 12,609.84/x
  3. Step 3: Cross multiply
    28,639.56x = 42,918.36 × 12,609.84
  4. Step 4: Simplify right side
    28,639.56x = 541,193,652.66
  5. Step 5: Solve for x
    x = 541,193,652.66/28,639.56
  6. Step 6: Final answer
    x = 18,896.72

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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.