Home / 31,880.69-43,993.48-18,450.99

Finding the Fourth Proportional to 31,880.69, 43,993.48 and 18,450.99

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Solution

The fourth proportional to 31,880.69, 43,993.48 and 18,450.99 is: 25,461.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,880.69 : 43,993.48 = 18,450.99 : x
  2. Step 2: Convert to fraction form
    31,880.69/43,993.48 = 18,450.99/x
  3. Step 3: Cross multiply
    31,880.69x = 43,993.48 × 18,450.99
  4. Step 4: Simplify right side
    31,880.69x = 811,723,248.01
  5. Step 5: Solve for x
    x = 811,723,248.01/31,880.69
  6. Step 6: Final answer
    x = 25,461.28

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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.