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Finding the Fourth Proportional to 13,263.20, 19,894.80 and 8,889.20

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Solution

The fourth proportional to 13,263.20, 19,894.80 and 8,889.20 is: 13,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.20 : 19,894.80 = 8,889.20 : x
  2. Step 2: Convert to fraction form
    13,263.20/19,894.80 = 8,889.20/x
  3. Step 3: Cross multiply
    13,263.20x = 19,894.80 × 8,889.20
  4. Step 4: Simplify right side
    13,263.20x = 176,848,856.16
  5. Step 5: Solve for x
    x = 176,848,856.16/13,263.20
  6. Step 6: Final answer
    x = 13,333.80

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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.