Home / 21,188.56-31,784.36-5,606

Finding the Fourth Proportional to 21,188.56, 31,784.36 and 5,606

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Solution

The fourth proportional to 21,188.56, 31,784.36 and 5,606 is: 8,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.56 : 31,784.36 = 5,606 : x
  2. Step 2: Convert to fraction form
    21,188.56/31,784.36 = 5,606/x
  3. Step 3: Cross multiply
    21,188.56x = 31,784.36 × 5,606
  4. Step 4: Simplify right side
    21,188.56x = 178,183,122.16
  5. Step 5: Solve for x
    x = 178,183,122.16/21,188.56
  6. Step 6: Final answer
    x = 8,409.40

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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.