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Finding the Fourth Proportional to 14,391.81, 19,863.81 and 9,085.59

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Solution

The fourth proportional to 14,391.81, 19,863.81 and 9,085.59 is: 12,540.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.81 : 19,863.81 = 9,085.59 : x
  2. Step 2: Convert to fraction form
    14,391.81/19,863.81 = 9,085.59/x
  3. Step 3: Cross multiply
    14,391.81x = 19,863.81 × 9,085.59
  4. Step 4: Simplify right side
    14,391.81x = 180,474,433.50
  5. Step 5: Solve for x
    x = 180,474,433.50/14,391.81
  6. Step 6: Final answer
    x = 12,540.08

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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.