Home / 28,915.40-43,356.90-12,272.60

Finding the Fourth Proportional to 28,915.40, 43,356.90 and 12,272.60

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Solution

The fourth proportional to 28,915.40, 43,356.90 and 12,272.60 is: 18,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.40 : 43,356.90 = 12,272.60 : x
  2. Step 2: Convert to fraction form
    28,915.40/43,356.90 = 12,272.60/x
  3. Step 3: Cross multiply
    28,915.40x = 43,356.90 × 12,272.60
  4. Step 4: Simplify right side
    28,915.40x = 532,101,890.94
  5. Step 5: Solve for x
    x = 532,101,890.94/28,915.40
  6. Step 6: Final answer
    x = 18,402.02

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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.