Home / 13,397.40-18,489.78-7,732.26

Finding the Fourth Proportional to 13,397.40, 18,489.78 and 7,732.26

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Solution

The fourth proportional to 13,397.40, 18,489.78 and 7,732.26 is: 10,671.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.40 : 18,489.78 = 7,732.26 : x
  2. Step 2: Convert to fraction form
    13,397.40/18,489.78 = 7,732.26/x
  3. Step 3: Cross multiply
    13,397.40x = 18,489.78 × 7,732.26
  4. Step 4: Simplify right side
    13,397.40x = 142,967,786.30
  5. Step 5: Solve for x
    x = 142,967,786.30/13,397.40
  6. Step 6: Final answer
    x = 10,671.31

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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.