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Finding the Fourth Proportional to 10,617.99, 15,928.07 and 4,380.63

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Solution

The fourth proportional to 10,617.99, 15,928.07 and 4,380.63 is: 6,571.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.99 : 15,928.07 = 4,380.63 : x
  2. Step 2: Convert to fraction form
    10,617.99/15,928.07 = 4,380.63/x
  3. Step 3: Cross multiply
    10,617.99x = 15,928.07 × 4,380.63
  4. Step 4: Simplify right side
    10,617.99x = 69,774,959.38
  5. Step 5: Solve for x
    x = 69,774,959.38/10,617.99
  6. Step 6: Final answer
    x = 6,571.39

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1.5x scale

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.