Home / 18,783.77-28,168.70-5,631.66

Finding the Fourth Proportional to 18,783.77, 28,168.70 and 5,631.66

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Solution

The fourth proportional to 18,783.77, 28,168.70 and 5,631.66 is: 8,445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.77 : 28,168.70 = 5,631.66 : x
  2. Step 2: Convert to fraction form
    18,783.77/28,168.70 = 5,631.66/x
  3. Step 3: Cross multiply
    18,783.77x = 28,168.70 × 5,631.66
  4. Step 4: Simplify right side
    18,783.77x = 158,636,512.88
  5. Step 5: Solve for x
    x = 158,636,512.88/18,783.77
  6. Step 6: Final answer
    x = 8,445.41

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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.