Home / 21,596.78-29,803.61-12,165.35

Finding the Fourth Proportional to 21,596.78, 29,803.61 and 12,165.35

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Solution

The fourth proportional to 21,596.78, 29,803.61 and 12,165.35 is: 16,788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,596.78 : 29,803.61 = 12,165.35 : x
  2. Step 2: Convert to fraction form
    21,596.78/29,803.61 = 12,165.35/x
  3. Step 3: Cross multiply
    21,596.78x = 29,803.61 × 12,165.35
  4. Step 4: Simplify right side
    21,596.78x = 362,571,197.90
  5. Step 5: Solve for x
    x = 362,571,197.90/21,596.78
  6. Step 6: Final answer
    x = 16,788.20

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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.