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Finding the Fourth Proportional to 28,473.81, 42,696.37 and 9,491.72

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Solution

The fourth proportional to 28,473.81, 42,696.37 and 9,491.72 is: 14,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.81 : 42,696.37 = 9,491.72 : x
  2. Step 2: Convert to fraction form
    28,473.81/42,696.37 = 9,491.72/x
  3. Step 3: Cross multiply
    28,473.81x = 42,696.37 × 9,491.72
  4. Step 4: Simplify right side
    28,473.81x = 405,261,989.06
  5. Step 5: Solve for x
    x = 405,261,989.06/28,473.81
  6. Step 6: Final answer
    x = 14,232.80

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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.