Home / 20,785.08-28,683.72-14,745.96

Finding the Fourth Proportional to 20,785.08, 28,683.72 and 14,745.96

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Solution

The fourth proportional to 20,785.08, 28,683.72 and 14,745.96 is: 20,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.08 : 28,683.72 = 14,745.96 : x
  2. Step 2: Convert to fraction form
    20,785.08/28,683.72 = 14,745.96/x
  3. Step 3: Cross multiply
    20,785.08x = 28,683.72 × 14,745.96
  4. Step 4: Simplify right side
    20,785.08x = 422,968,987.77
  5. Step 5: Solve for x
    x = 422,968,987.77/20,785.08
  6. Step 6: Final answer
    x = 20,349.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.