Home / 13,398.12-18,485.19-7,732.11

Finding the Fourth Proportional to 13,398.12, 18,485.19 and 7,732.11

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Solution

The fourth proportional to 13,398.12, 18,485.19 and 7,732.11 is: 10,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.12 : 18,485.19 = 7,732.11 : x
  2. Step 2: Convert to fraction form
    13,398.12/18,485.19 = 7,732.11/x
  3. Step 3: Cross multiply
    13,398.12x = 18,485.19 × 7,732.11
  4. Step 4: Simplify right side
    13,398.12x = 142,929,522.45
  5. Step 5: Solve for x
    x = 142,929,522.45/13,398.12
  6. Step 6: Final answer
    x = 10,667.88

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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.