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Finding the Fourth Proportional to 35,910.68, 53,878.98 and 12,540.56

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Solution

The fourth proportional to 35,910.68, 53,878.98 and 12,540.56 is: 18,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,910.68 : 53,878.98 = 12,540.56 : x
  2. Step 2: Convert to fraction form
    35,910.68/53,878.98 = 12,540.56/x
  3. Step 3: Cross multiply
    35,910.68x = 53,878.98 × 12,540.56
  4. Step 4: Simplify right side
    35,910.68x = 675,672,581.43
  5. Step 5: Solve for x
    x = 675,672,581.43/35,910.68
  6. Step 6: Final answer
    x = 18,815.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.