Home / 28,882.56-43,256.88-21,072

Finding the Fourth Proportional to 28,882.56, 43,256.88 and 21,072

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Solution

The fourth proportional to 28,882.56, 43,256.88 and 21,072 is: 31,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,882.56 : 43,256.88 = 21,072 : x
  2. Step 2: Convert to fraction form
    28,882.56/43,256.88 = 21,072/x
  3. Step 3: Cross multiply
    28,882.56x = 43,256.88 × 21,072
  4. Step 4: Simplify right side
    28,882.56x = 911,508,975.36
  5. Step 5: Solve for x
    x = 911,508,975.36/28,882.56
  6. Step 6: Final answer
    x = 31,559.15

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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.