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Finding the Fourth Proportional to 18,851.25, 26,013.69 and 10,354.49

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Solution

The fourth proportional to 18,851.25, 26,013.69 and 10,354.49 is: 14,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.25 : 26,013.69 = 10,354.49 : x
  2. Step 2: Convert to fraction form
    18,851.25/26,013.69 = 10,354.49/x
  3. Step 3: Cross multiply
    18,851.25x = 26,013.69 × 10,354.49
  4. Step 4: Simplify right side
    18,851.25x = 269,358,492.97
  5. Step 5: Solve for x
    x = 269,358,492.97/18,851.25
  6. Step 6: Final answer
    x = 14,288.63

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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.