Home / 31,515.40-43,490.69-17,175.36

Finding the Fourth Proportional to 31,515.40, 43,490.69 and 17,175.36

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Solution

The fourth proportional to 31,515.40, 43,490.69 and 17,175.36 is: 23,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.40 : 43,490.69 = 17,175.36 : x
  2. Step 2: Convert to fraction form
    31,515.40/43,490.69 = 17,175.36/x
  3. Step 3: Cross multiply
    31,515.40x = 43,490.69 × 17,175.36
  4. Step 4: Simplify right side
    31,515.40x = 746,968,257.40
  5. Step 5: Solve for x
    x = 746,968,257.40/31,515.40
  6. Step 6: Final answer
    x = 23,701.69

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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.