Home / 21,428.37-32,129.60-14,481.81

Finding the Fourth Proportional to 21,428.37, 32,129.60 and 14,481.81

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Solution

The fourth proportional to 21,428.37, 32,129.60 and 14,481.81 is: 21,713.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.37 : 32,129.60 = 14,481.81 : x
  2. Step 2: Convert to fraction form
    21,428.37/32,129.60 = 14,481.81/x
  3. Step 3: Cross multiply
    21,428.37x = 32,129.60 × 14,481.81
  4. Step 4: Simplify right side
    21,428.37x = 465,294,690.17
  5. Step 5: Solve for x
    x = 465,294,690.17/21,428.37
  6. Step 6: Final answer
    x = 21,713.96

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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.