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Finding the Fourth Proportional to 11,571.32, 15,955.98 and 11,328.32

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Solution

The fourth proportional to 11,571.32, 15,955.98 and 11,328.32 is: 15,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,571.32 : 15,955.98 = 11,328.32 : x
  2. Step 2: Convert to fraction form
    11,571.32/15,955.98 = 11,328.32/x
  3. Step 3: Cross multiply
    11,571.32x = 15,955.98 × 11,328.32
  4. Step 4: Simplify right side
    11,571.32x = 180,754,447.35
  5. Step 5: Solve for x
    x = 180,754,447.35/11,571.32
  6. Step 6: Final answer
    x = 15,620.90

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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.