Home / 21,087.76-31,647.06-15,556.02

Finding the Fourth Proportional to 21,087.76, 31,647.06 and 15,556.02

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Solution

The fourth proportional to 21,087.76, 31,647.06 and 15,556.02 is: 23,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.76 : 31,647.06 = 15,556.02 : x
  2. Step 2: Convert to fraction form
    21,087.76/31,647.06 = 15,556.02/x
  3. Step 3: Cross multiply
    21,087.76x = 31,647.06 × 15,556.02
  4. Step 4: Simplify right side
    21,087.76x = 492,302,298.30
  5. Step 5: Solve for x
    x = 492,302,298.30/21,087.76
  6. Step 6: Final answer
    x = 23,345.41

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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.