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Finding the Fourth Proportional to 15,070.53, 22,619.81 and 7,680.54

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Solution

The fourth proportional to 15,070.53, 22,619.81 and 7,680.54 is: 11,527.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.53 : 22,619.81 = 7,680.54 : x
  2. Step 2: Convert to fraction form
    15,070.53/22,619.81 = 7,680.54/x
  3. Step 3: Cross multiply
    15,070.53x = 22,619.81 × 7,680.54
  4. Step 4: Simplify right side
    15,070.53x = 173,732,355.50
  5. Step 5: Solve for x
    x = 173,732,355.50/15,070.53
  6. Step 6: Final answer
    x = 11,527.95

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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.