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Finding the Fourth Proportional to 14,364.88, 19,823.78 and 7,991.98

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Solution

The fourth proportional to 14,364.88, 19,823.78 and 7,991.98 is: 11,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,364.88 : 19,823.78 = 7,991.98 : x
  2. Step 2: Convert to fraction form
    14,364.88/19,823.78 = 7,991.98/x
  3. Step 3: Cross multiply
    14,364.88x = 19,823.78 × 7,991.98
  4. Step 4: Simplify right side
    14,364.88x = 158,431,253.28
  5. Step 5: Solve for x
    x = 158,431,253.28/14,364.88
  6. Step 6: Final answer
    x = 11,029.07

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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.