Home / 21,330.56-31,949.04-17,590.64

Finding the Fourth Proportional to 21,330.56, 31,949.04 and 17,590.64

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Solution

The fourth proportional to 21,330.56, 31,949.04 and 17,590.64 is: 26,347.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.56 : 31,949.04 = 17,590.64 : x
  2. Step 2: Convert to fraction form
    21,330.56/31,949.04 = 17,590.64/x
  3. Step 3: Cross multiply
    21,330.56x = 31,949.04 × 17,590.64
  4. Step 4: Simplify right side
    21,330.56x = 562,004,060.99
  5. Step 5: Solve for x
    x = 562,004,060.99/21,330.56
  6. Step 6: Final answer
    x = 26,347.37

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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.