Home / 21,977.12-30,328.32-12,041.12

Finding the Fourth Proportional to 21,977.12, 30,328.32 and 12,041.12

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Solution

The fourth proportional to 21,977.12, 30,328.32 and 12,041.12 is: 16,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.12 : 30,328.32 = 12,041.12 : x
  2. Step 2: Convert to fraction form
    21,977.12/30,328.32 = 12,041.12/x
  3. Step 3: Cross multiply
    21,977.12x = 30,328.32 × 12,041.12
  4. Step 4: Simplify right side
    21,977.12x = 365,186,940.52
  5. Step 5: Solve for x
    x = 365,186,940.52/21,977.12
  6. Step 6: Final answer
    x = 16,616.69

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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.