Home / 21,335.36-29,443.20-12,383.60

Finding the Fourth Proportional to 21,335.36, 29,443.20 and 12,383.60

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Solution

The fourth proportional to 21,335.36, 29,443.20 and 12,383.60 is: 17,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.36 : 29,443.20 = 12,383.60 : x
  2. Step 2: Convert to fraction form
    21,335.36/29,443.20 = 12,383.60/x
  3. Step 3: Cross multiply
    21,335.36x = 29,443.20 × 12,383.60
  4. Step 4: Simplify right side
    21,335.36x = 364,612,811.52
  5. Step 5: Solve for x
    x = 364,612,811.52/21,335.36
  6. Step 6: Final answer
    x = 17,089.60

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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.