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Finding the Fourth Proportional to 14,279.60, 19,718.36 and 8,983.60

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Solution

The fourth proportional to 14,279.60, 19,718.36 and 8,983.60 is: 12,405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.60 : 19,718.36 = 8,983.60 : x
  2. Step 2: Convert to fraction form
    14,279.60/19,718.36 = 8,983.60/x
  3. Step 3: Cross multiply
    14,279.60x = 19,718.36 × 8,983.60
  4. Step 4: Simplify right side
    14,279.60x = 177,141,858.90
  5. Step 5: Solve for x
    x = 177,141,858.90/14,279.60
  6. Step 6: Final answer
    x = 12,405.24

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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.