Home / 20,502.08-30,683.40-13,111.60

Finding the Fourth Proportional to 20,502.08, 30,683.40 and 13,111.60

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Solution

The fourth proportional to 20,502.08, 30,683.40 and 13,111.60 is: 19,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.08 : 30,683.40 = 13,111.60 : x
  2. Step 2: Convert to fraction form
    20,502.08/30,683.40 = 13,111.60/x
  3. Step 3: Cross multiply
    20,502.08x = 30,683.40 × 13,111.60
  4. Step 4: Simplify right side
    20,502.08x = 402,308,467.44
  5. Step 5: Solve for x
    x = 402,308,467.44/20,502.08
  6. Step 6: Final answer
    x = 19,622.81

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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.