Home / 21,345.08-29,456.91-12,392.03

Finding the Fourth Proportional to 21,345.08, 29,456.91 and 12,392.03

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Solution

The fourth proportional to 21,345.08, 29,456.91 and 12,392.03 is: 17,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.08 : 29,456.91 = 12,392.03 : x
  2. Step 2: Convert to fraction form
    21,345.08/29,456.91 = 12,392.03/x
  3. Step 3: Cross multiply
    21,345.08x = 29,456.91 × 12,392.03
  4. Step 4: Simplify right side
    21,345.08x = 365,030,986.07
  5. Step 5: Solve for x
    x = 365,030,986.07/21,345.08
  6. Step 6: Final answer
    x = 17,101.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.