Home / 13,255.91-19,886.60-4,490.59

Finding the Fourth Proportional to 13,255.91, 19,886.60 and 4,490.59

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Solution

The fourth proportional to 13,255.91, 19,886.60 and 4,490.59 is: 6,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.91 : 19,886.60 = 4,490.59 : x
  2. Step 2: Convert to fraction form
    13,255.91/19,886.60 = 4,490.59/x
  3. Step 3: Cross multiply
    13,255.91x = 19,886.60 × 4,490.59
  4. Step 4: Simplify right side
    13,255.91x = 89,302,567.09
  5. Step 5: Solve for x
    x = 89,302,567.09/13,255.91
  6. Step 6: Final answer
    x = 6,736.81

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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.