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Finding the Fourth Proportional to 21,409.36, 29,546.08 and 12,336.08

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Solution

The fourth proportional to 21,409.36, 29,546.08 and 12,336.08 is: 17,024.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.36 : 29,546.08 = 12,336.08 : x
  2. Step 2: Convert to fraction form
    21,409.36/29,546.08 = 12,336.08/x
  3. Step 3: Cross multiply
    21,409.36x = 29,546.08 × 12,336.08
  4. Step 4: Simplify right side
    21,409.36x = 364,482,806.57
  5. Step 5: Solve for x
    x = 364,482,806.57/21,409.36
  6. Step 6: Final answer
    x = 17,024.46

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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.