Home / 13,354.80-18,431.28-7,388.34

Finding the Fourth Proportional to 13,354.80, 18,431.28 and 7,388.34

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Solution

The fourth proportional to 13,354.80, 18,431.28 and 7,388.34 is: 10,196.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.80 : 18,431.28 = 7,388.34 : x
  2. Step 2: Convert to fraction form
    13,354.80/18,431.28 = 7,388.34/x
  3. Step 3: Cross multiply
    13,354.80x = 18,431.28 × 7,388.34
  4. Step 4: Simplify right side
    13,354.80x = 136,176,563.28
  5. Step 5: Solve for x
    x = 136,176,563.28/13,354.80
  6. Step 6: Final answer
    x = 10,196.83

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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.