Home / 18,675.84-25,761.60-13,111.68

Finding the Fourth Proportional to 18,675.84, 25,761.60 and 13,111.68

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Solution

The fourth proportional to 18,675.84, 25,761.60 and 13,111.68 is: 18,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.84 : 25,761.60 = 13,111.68 : x
  2. Step 2: Convert to fraction form
    18,675.84/25,761.60 = 13,111.68/x
  3. Step 3: Cross multiply
    18,675.84x = 25,761.60 × 13,111.68
  4. Step 4: Simplify right side
    18,675.84x = 337,777,855.49
  5. Step 5: Solve for x
    x = 337,777,855.49/18,675.84
  6. Step 6: Final answer
    x = 18,086.35

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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.