Home / 12,420.01-18,630.60-4,100.77

Finding the Fourth Proportional to 12,420.01, 18,630.60 and 4,100.77

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Solution

The fourth proportional to 12,420.01, 18,630.60 and 4,100.77 is: 6,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.01 : 18,630.60 = 4,100.77 : x
  2. Step 2: Convert to fraction form
    12,420.01/18,630.60 = 4,100.77/x
  3. Step 3: Cross multiply
    12,420.01x = 18,630.60 × 4,100.77
  4. Step 4: Simplify right side
    12,420.01x = 76,399,805.56
  5. Step 5: Solve for x
    x = 76,399,805.56/12,420.01
  6. Step 6: Final answer
    x = 6,151.35

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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.