Home / 12,477.12-18,857.28-12,262.08

Finding the Fourth Proportional to 12,477.12, 18,857.28 and 12,262.08

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Solution

The fourth proportional to 12,477.12, 18,857.28 and 12,262.08 is: 18,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.12 : 18,857.28 = 12,262.08 : x
  2. Step 2: Convert to fraction form
    12,477.12/18,857.28 = 12,262.08/x
  3. Step 3: Cross multiply
    12,477.12x = 18,857.28 × 12,262.08
  4. Step 4: Simplify right side
    12,477.12x = 231,229,475.94
  5. Step 5: Solve for x
    x = 231,229,475.94/12,477.12
  6. Step 6: Final answer
    x = 18,532.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.