Home / 21,328.54-31,962.74-10,071.87

Finding the Fourth Proportional to 21,328.54, 31,962.74 and 10,071.87

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Solution

The fourth proportional to 21,328.54, 31,962.74 and 10,071.87 is: 15,093.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.54 : 31,962.74 = 10,071.87 : x
  2. Step 2: Convert to fraction form
    21,328.54/31,962.74 = 10,071.87/x
  3. Step 3: Cross multiply
    21,328.54x = 31,962.74 × 10,071.87
  4. Step 4: Simplify right side
    21,328.54x = 321,924,562.12
  5. Step 5: Solve for x
    x = 321,924,562.12/21,328.54
  6. Step 6: Final answer
    x = 15,093.61

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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.