Home / 12,118.89-18,154.62-7,946.16

Finding the Fourth Proportional to 12,118.89, 18,154.62 and 7,946.16

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Solution

The fourth proportional to 12,118.89, 18,154.62 and 7,946.16 is: 11,903.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.89 : 18,154.62 = 7,946.16 : x
  2. Step 2: Convert to fraction form
    12,118.89/18,154.62 = 7,946.16/x
  3. Step 3: Cross multiply
    12,118.89x = 18,154.62 × 7,946.16
  4. Step 4: Simplify right side
    12,118.89x = 144,259,515.26
  5. Step 5: Solve for x
    x = 144,259,515.26/12,118.89
  6. Step 6: Final answer
    x = 11,903.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.