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Finding the Fourth Proportional to 13,322.48, 19,946.72 and 8,647.92

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Solution

The fourth proportional to 13,322.48, 19,946.72 and 8,647.92 is: 12,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.48 : 19,946.72 = 8,647.92 : x
  2. Step 2: Convert to fraction form
    13,322.48/19,946.72 = 8,647.92/x
  3. Step 3: Cross multiply
    13,322.48x = 19,946.72 × 8,647.92
  4. Step 4: Simplify right side
    13,322.48x = 172,497,638.82
  5. Step 5: Solve for x
    x = 172,497,638.82/13,322.48
  6. Step 6: Final answer
    x = 12,947.86

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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.