Home / 18,129.84-27,187.38-5,645.67

Finding the Fourth Proportional to 18,129.84, 27,187.38 and 5,645.67

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Solution

The fourth proportional to 18,129.84, 27,187.38 and 5,645.67 is: 8,466.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.84 : 27,187.38 = 5,645.67 : x
  2. Step 2: Convert to fraction form
    18,129.84/27,187.38 = 5,645.67/x
  3. Step 3: Cross multiply
    18,129.84x = 27,187.38 × 5,645.67
  4. Step 4: Simplify right side
    18,129.84x = 153,490,975.64
  5. Step 5: Solve for x
    x = 153,490,975.64/18,129.84
  6. Step 6: Final answer
    x = 8,466.21

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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.