Home / 31,603.74-43,599.59-18,172.14

Finding the Fourth Proportional to 31,603.74, 43,599.59 and 18,172.14

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Solution

The fourth proportional to 31,603.74, 43,599.59 and 18,172.14 is: 25,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,603.74 : 43,599.59 = 18,172.14 : x
  2. Step 2: Convert to fraction form
    31,603.74/43,599.59 = 18,172.14/x
  3. Step 3: Cross multiply
    31,603.74x = 43,599.59 × 18,172.14
  4. Step 4: Simplify right side
    31,603.74x = 792,297,762.56
  5. Step 5: Solve for x
    x = 792,297,762.56/31,603.74
  6. Step 6: Final answer
    x = 25,069.75

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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.