Home / 28,604.80-42,915.30-8,885.35

Finding the Fourth Proportional to 28,604.80, 42,915.30 and 8,885.35

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Solution

The fourth proportional to 28,604.80, 42,915.30 and 8,885.35 is: 13,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,604.80 : 42,915.30 = 8,885.35 : x
  2. Step 2: Convert to fraction form
    28,604.80/42,915.30 = 8,885.35/x
  3. Step 3: Cross multiply
    28,604.80x = 42,915.30 × 8,885.35
  4. Step 4: Simplify right side
    28,604.80x = 381,317,460.86
  5. Step 5: Solve for x
    x = 381,317,460.86/28,604.80
  6. Step 6: Final answer
    x = 13,330.54

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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.