Home / 12,638.12-18,957.98-3,873.16

Finding the Fourth Proportional to 12,638.12, 18,957.98 and 3,873.16

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Solution

The fourth proportional to 12,638.12, 18,957.98 and 3,873.16 is: 5,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.12 : 18,957.98 = 3,873.16 : x
  2. Step 2: Convert to fraction form
    12,638.12/18,957.98 = 3,873.16/x
  3. Step 3: Cross multiply
    12,638.12x = 18,957.98 × 3,873.16
  4. Step 4: Simplify right side
    12,638.12x = 73,427,289.82
  5. Step 5: Solve for x
    x = 73,427,289.82/12,638.12
  6. Step 6: Final answer
    x = 5,809.99

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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.