Home / 21,226.86-29,284.62-12,272.70

Finding the Fourth Proportional to 21,226.86, 29,284.62 and 12,272.70

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Solution

The fourth proportional to 21,226.86, 29,284.62 and 12,272.70 is: 16,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.86 : 29,284.62 = 12,272.70 : x
  2. Step 2: Convert to fraction form
    21,226.86/29,284.62 = 12,272.70/x
  3. Step 3: Cross multiply
    21,226.86x = 29,284.62 × 12,272.70
  4. Step 4: Simplify right side
    21,226.86x = 359,401,355.87
  5. Step 5: Solve for x
    x = 359,401,355.87/21,226.86
  6. Step 6: Final answer
    x = 16,931.44

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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.