Home / 22,551.60-31,120.44-12,480.47

Finding the Fourth Proportional to 22,551.60, 31,120.44 and 12,480.47

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Solution

The fourth proportional to 22,551.60, 31,120.44 and 12,480.47 is: 17,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.60 : 31,120.44 = 12,480.47 : x
  2. Step 2: Convert to fraction form
    22,551.60/31,120.44 = 12,480.47/x
  3. Step 3: Cross multiply
    22,551.60x = 31,120.44 × 12,480.47
  4. Step 4: Simplify right side
    22,551.60x = 388,397,702.31
  5. Step 5: Solve for x
    x = 388,397,702.31/22,551.60
  6. Step 6: Final answer
    x = 17,222.62

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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.