Home / 28,915.36-43,312.56-18,474.08

Finding the Fourth Proportional to 28,915.36, 43,312.56 and 18,474.08

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Solution

The fourth proportional to 28,915.36, 43,312.56 and 18,474.08 is: 27,672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.36 : 43,312.56 = 18,474.08 : x
  2. Step 2: Convert to fraction form
    28,915.36/43,312.56 = 18,474.08/x
  3. Step 3: Cross multiply
    28,915.36x = 43,312.56 × 18,474.08
  4. Step 4: Simplify right side
    28,915.36x = 800,159,698.44
  5. Step 5: Solve for x
    x = 800,159,698.44/28,915.36
  6. Step 6: Final answer
    x = 27,672.48

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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.