Home / 13,438.08-18,553.60-12,017.36

Finding the Fourth Proportional to 13,438.08, 18,553.60 and 12,017.36

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Solution

The fourth proportional to 13,438.08, 18,553.60 and 12,017.36 is: 16,592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.08 : 18,553.60 = 12,017.36 : x
  2. Step 2: Convert to fraction form
    13,438.08/18,553.60 = 12,017.36/x
  3. Step 3: Cross multiply
    13,438.08x = 18,553.60 × 12,017.36
  4. Step 4: Simplify right side
    13,438.08x = 222,965,290.50
  5. Step 5: Solve for x
    x = 222,965,290.50/13,438.08
  6. Step 6: Final answer
    x = 16,592.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.