Home / 12,420.76-18,630.94-4,101.32

Finding the Fourth Proportional to 12,420.76, 18,630.94 and 4,101.32

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Solution

The fourth proportional to 12,420.76, 18,630.94 and 4,101.32 is: 6,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.76 : 18,630.94 = 4,101.32 : x
  2. Step 2: Convert to fraction form
    12,420.76/18,630.94 = 4,101.32/x
  3. Step 3: Cross multiply
    12,420.76x = 18,630.94 × 4,101.32
  4. Step 4: Simplify right side
    12,420.76x = 76,411,446.84
  5. Step 5: Solve for x
    x = 76,411,446.84/12,420.76
  6. Step 6: Final answer
    x = 6,151.91

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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.