Home / 18,783.90-28,180.10-5,636.49

Finding the Fourth Proportional to 18,783.90, 28,180.10 and 5,636.49

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Solution

The fourth proportional to 18,783.90, 28,180.10 and 5,636.49 is: 8,456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.90 : 28,180.10 = 5,636.49 : x
  2. Step 2: Convert to fraction form
    18,783.90/28,180.10 = 5,636.49/x
  3. Step 3: Cross multiply
    18,783.90x = 28,180.10 × 5,636.49
  4. Step 4: Simplify right side
    18,783.90x = 158,836,760.26
  5. Step 5: Solve for x
    x = 158,836,760.26/18,783.90
  6. Step 6: Final answer
    x = 8,456.01

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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.