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Finding the Fourth Proportional to 18,803.51, 25,951.25 and 12,348.71

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Solution

The fourth proportional to 18,803.51, 25,951.25 and 12,348.71 is: 17,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.51 : 25,951.25 = 12,348.71 : x
  2. Step 2: Convert to fraction form
    18,803.51/25,951.25 = 12,348.71/x
  3. Step 3: Cross multiply
    18,803.51x = 25,951.25 × 12,348.71
  4. Step 4: Simplify right side
    18,803.51x = 320,464,460.39
  5. Step 5: Solve for x
    x = 320,464,460.39/18,803.51
  6. Step 6: Final answer
    x = 17,042.80

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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.