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Finding the Fourth Proportional to 21,453.60, 29,607.04 and 12,022.08

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Solution

The fourth proportional to 21,453.60, 29,607.04 and 12,022.08 is: 16,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.60 : 29,607.04 = 12,022.08 : x
  2. Step 2: Convert to fraction form
    21,453.60/29,607.04 = 12,022.08/x
  3. Step 3: Cross multiply
    21,453.60x = 29,607.04 × 12,022.08
  4. Step 4: Simplify right side
    21,453.60x = 355,938,203.44
  5. Step 5: Solve for x
    x = 355,938,203.44/21,453.60
  6. Step 6: Final answer
    x = 16,591.07

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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.