Home / 21,223.44-29,290.89-12,730.25

Finding the Fourth Proportional to 21,223.44, 29,290.89 and 12,730.25

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Solution

The fourth proportional to 21,223.44, 29,290.89 and 12,730.25 is: 17,569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.44 : 29,290.89 = 12,730.25 : x
  2. Step 2: Convert to fraction form
    21,223.44/29,290.89 = 12,730.25/x
  3. Step 3: Cross multiply
    21,223.44x = 29,290.89 × 12,730.25
  4. Step 4: Simplify right side
    21,223.44x = 372,880,205.97
  5. Step 5: Solve for x
    x = 372,880,205.97/21,223.44
  6. Step 6: Final answer
    x = 17,569.26

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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.