Home / 12,185.64-18,158.58-11,788.74

Finding the Fourth Proportional to 12,185.64, 18,158.58 and 11,788.74

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Solution

The fourth proportional to 12,185.64, 18,158.58 and 11,788.74 is: 17,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.64 : 18,158.58 = 11,788.74 : x
  2. Step 2: Convert to fraction form
    12,185.64/18,158.58 = 11,788.74/x
  3. Step 3: Cross multiply
    12,185.64x = 18,158.58 × 11,788.74
  4. Step 4: Simplify right side
    12,185.64x = 214,066,778.39
  5. Step 5: Solve for x
    x = 214,066,778.39/12,185.64
  6. Step 6: Final answer
    x = 17,567.13

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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.