Home / 18,189.75-25,087.63-11,818.39

Finding the Fourth Proportional to 18,189.75, 25,087.63 and 11,818.39

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Solution

The fourth proportional to 18,189.75, 25,087.63 and 11,818.39 is: 16,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.75 : 25,087.63 = 11,818.39 : x
  2. Step 2: Convert to fraction form
    18,189.75/25,087.63 = 11,818.39/x
  3. Step 3: Cross multiply
    18,189.75x = 25,087.63 × 11,818.39
  4. Step 4: Simplify right side
    18,189.75x = 296,495,395.52
  5. Step 5: Solve for x
    x = 296,495,395.52/18,189.75
  6. Step 6: Final answer
    x = 16,300.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.