Home / 22,790-31,450.14-12,718.33

Finding the Fourth Proportional to 22,790, 31,450.14 and 12,718.33

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Solution

The fourth proportional to 22,790, 31,450.14 and 12,718.33 is: 17,551.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,790 : 31,450.14 = 12,718.33 : x
  2. Step 2: Convert to fraction form
    22,790/31,450.14 = 12,718.33/x
  3. Step 3: Cross multiply
    22,790x = 31,450.14 × 12,718.33
  4. Step 4: Simplify right side
    22,790x = 399,993,259.07
  5. Step 5: Solve for x
    x = 399,993,259.07/22,790
  6. Step 6: Final answer
    x = 17,551.26

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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.