Home / 21,102.56-31,664.68-9,423.44

Finding the Fourth Proportional to 21,102.56, 31,664.68 and 9,423.44

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Solution

The fourth proportional to 21,102.56, 31,664.68 and 9,423.44 is: 14,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.56 : 31,664.68 = 9,423.44 : x
  2. Step 2: Convert to fraction form
    21,102.56/31,664.68 = 9,423.44/x
  3. Step 3: Cross multiply
    21,102.56x = 31,664.68 × 9,423.44
  4. Step 4: Simplify right side
    21,102.56x = 298,390,212.10
  5. Step 5: Solve for x
    x = 298,390,212.10/21,102.56
  6. Step 6: Final answer
    x = 14,140.00

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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.