Home / 18,984.39-28,478.66-11,636.07

Finding the Fourth Proportional to 18,984.39, 28,478.66 and 11,636.07

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Solution

The fourth proportional to 18,984.39, 28,478.66 and 11,636.07 is: 17,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.39 : 28,478.66 = 11,636.07 : x
  2. Step 2: Convert to fraction form
    18,984.39/28,478.66 = 11,636.07/x
  3. Step 3: Cross multiply
    18,984.39x = 28,478.66 × 11,636.07
  4. Step 4: Simplify right side
    18,984.39x = 331,379,681.27
  5. Step 5: Solve for x
    x = 331,379,681.27/18,984.39
  6. Step 6: Final answer
    x = 17,455.38

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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.