Home / 12,084.90-18,128.21-5,057.84

Finding the Fourth Proportional to 12,084.90, 18,128.21 and 5,057.84

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Solution

The fourth proportional to 12,084.90, 18,128.21 and 5,057.84 is: 7,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.90 : 18,128.21 = 5,057.84 : x
  2. Step 2: Convert to fraction form
    12,084.90/18,128.21 = 5,057.84/x
  3. Step 3: Cross multiply
    12,084.90x = 18,128.21 × 5,057.84
  4. Step 4: Simplify right side
    12,084.90x = 91,689,495.03
  5. Step 5: Solve for x
    x = 91,689,495.03/12,084.90
  6. Step 6: Final answer
    x = 7,587.11

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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.