Home / 21,212.46-31,663.62-19,670.58

Finding the Fourth Proportional to 21,212.46, 31,663.62 and 19,670.58

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Solution

The fourth proportional to 21,212.46, 31,663.62 and 19,670.58 is: 29,362.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.46 : 31,663.62 = 19,670.58 : x
  2. Step 2: Convert to fraction form
    21,212.46/31,663.62 = 19,670.58/x
  3. Step 3: Cross multiply
    21,212.46x = 31,663.62 × 19,670.58
  4. Step 4: Simplify right side
    21,212.46x = 622,841,770.30
  5. Step 5: Solve for x
    x = 622,841,770.30/21,212.46
  6. Step 6: Final answer
    x = 29,362.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.