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Finding the Fourth Proportional to 10,059.96, 15,085.07 and 4,215

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Solution

The fourth proportional to 10,059.96, 15,085.07 and 4,215 is: 6,320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,059.96 : 15,085.07 = 4,215 : x
  2. Step 2: Convert to fraction form
    10,059.96/15,085.07 = 4,215/x
  3. Step 3: Cross multiply
    10,059.96x = 15,085.07 × 4,215
  4. Step 4: Simplify right side
    10,059.96x = 63,583,570.05
  5. Step 5: Solve for x
    x = 63,583,570.05/10,059.96
  6. Step 6: Final answer
    x = 6,320.46

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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.