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Finding the Fourth Proportional to 10,881.14, 15,017.99 and 6,404.67

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Solution

The fourth proportional to 10,881.14, 15,017.99 and 6,404.67 is: 8,839.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.14 : 15,017.99 = 6,404.67 : x
  2. Step 2: Convert to fraction form
    10,881.14/15,017.99 = 6,404.67/x
  3. Step 3: Cross multiply
    10,881.14x = 15,017.99 × 6,404.67
  4. Step 4: Simplify right side
    10,881.14x = 96,185,237.99
  5. Step 5: Solve for x
    x = 96,185,237.99/10,881.14
  6. Step 6: Final answer
    x = 8,839.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.