Home / 18,749.09-28,119.49-5,419.19

Finding the Fourth Proportional to 18,749.09, 28,119.49 and 5,419.19

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Solution

The fourth proportional to 18,749.09, 28,119.49 and 5,419.19 is: 8,127.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.09 : 28,119.49 = 5,419.19 : x
  2. Step 2: Convert to fraction form
    18,749.09/28,119.49 = 5,419.19/x
  3. Step 3: Cross multiply
    18,749.09x = 28,119.49 × 5,419.19
  4. Step 4: Simplify right side
    18,749.09x = 152,384,915.76
  5. Step 5: Solve for x
    x = 152,384,915.76/18,749.09
  6. Step 6: Final answer
    x = 8,127.59

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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.