Home / 12,686.37-18,922.28-11,954.62

Finding the Fourth Proportional to 12,686.37, 18,922.28 and 11,954.62

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Solution

The fourth proportional to 12,686.37, 18,922.28 and 11,954.62 is: 17,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.37 : 18,922.28 = 11,954.62 : x
  2. Step 2: Convert to fraction form
    12,686.37/18,922.28 = 11,954.62/x
  3. Step 3: Cross multiply
    12,686.37x = 18,922.28 × 11,954.62
  4. Step 4: Simplify right side
    12,686.37x = 226,208,666.93
  5. Step 5: Solve for x
    x = 226,208,666.93/12,686.37
  6. Step 6: Final answer
    x = 17,830.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.