Home / 21,058.08-31,603.44-7,922.40

Finding the Fourth Proportional to 21,058.08, 31,603.44 and 7,922.40

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Solution

The fourth proportional to 21,058.08, 31,603.44 and 7,922.40 is: 11,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.08 : 31,603.44 = 7,922.40 : x
  2. Step 2: Convert to fraction form
    21,058.08/31,603.44 = 7,922.40/x
  3. Step 3: Cross multiply
    21,058.08x = 31,603.44 × 7,922.40
  4. Step 4: Simplify right side
    21,058.08x = 250,375,093.06
  5. Step 5: Solve for x
    x = 250,375,093.06/21,058.08
  6. Step 6: Final answer
    x = 11,889.74

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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.