Home / 21,453.20-32,164.80-12,683.60

Finding the Fourth Proportional to 21,453.20, 32,164.80 and 12,683.60

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Solution

The fourth proportional to 21,453.20, 32,164.80 and 12,683.60 is: 19,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.20 : 32,164.80 = 12,683.60 : x
  2. Step 2: Convert to fraction form
    21,453.20/32,164.80 = 12,683.60/x
  3. Step 3: Cross multiply
    21,453.20x = 32,164.80 × 12,683.60
  4. Step 4: Simplify right side
    21,453.20x = 407,965,457.28
  5. Step 5: Solve for x
    x = 407,965,457.28/21,453.20
  6. Step 6: Final answer
    x = 19,016.53

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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.