Home / 13,397.58-18,489.09-7,429.80

Finding the Fourth Proportional to 13,397.58, 18,489.09 and 7,429.80

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Solution

The fourth proportional to 13,397.58, 18,489.09 and 7,429.80 is: 10,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.58 : 18,489.09 = 7,429.80 : x
  2. Step 2: Convert to fraction form
    13,397.58/18,489.09 = 7,429.80/x
  3. Step 3: Cross multiply
    13,397.58x = 18,489.09 × 7,429.80
  4. Step 4: Simplify right side
    13,397.58x = 137,370,240.88
  5. Step 5: Solve for x
    x = 137,370,240.88/13,397.58
  6. Step 6: Final answer
    x = 10,253.36

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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.