Home / 22,558.10-31,128.97-12,485.98

Finding the Fourth Proportional to 22,558.10, 31,128.97 and 12,485.98

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Solution

The fourth proportional to 22,558.10, 31,128.97 and 12,485.98 is: 17,229.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.10 : 31,128.97 = 12,485.98 : x
  2. Step 2: Convert to fraction form
    22,558.10/31,128.97 = 12,485.98/x
  3. Step 3: Cross multiply
    22,558.10x = 31,128.97 × 12,485.98
  4. Step 4: Simplify right side
    22,558.10x = 388,675,696.84
  5. Step 5: Solve for x
    x = 388,675,696.84/22,558.10
  6. Step 6: Final answer
    x = 17,229.98

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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.