Home / 28,915.14-43,360.47-9,188.40

Finding the Fourth Proportional to 28,915.14, 43,360.47 and 9,188.40

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Solution

The fourth proportional to 28,915.14, 43,360.47 and 9,188.40 is: 13,778.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.14 : 43,360.47 = 9,188.40 : x
  2. Step 2: Convert to fraction form
    28,915.14/43,360.47 = 9,188.40/x
  3. Step 3: Cross multiply
    28,915.14x = 43,360.47 × 9,188.40
  4. Step 4: Simplify right side
    28,915.14x = 398,413,342.55
  5. Step 5: Solve for x
    x = 398,413,342.55/28,915.14
  6. Step 6: Final answer
    x = 13,778.71

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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.