Home / 18,666.50-25,761.60-13,942.58

Finding the Fourth Proportional to 18,666.50, 25,761.60 and 13,942.58

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Solution

The fourth proportional to 18,666.50, 25,761.60 and 13,942.58 is: 19,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.50 : 25,761.60 = 13,942.58 : x
  2. Step 2: Convert to fraction form
    18,666.50/25,761.60 = 13,942.58/x
  3. Step 3: Cross multiply
    18,666.50x = 25,761.60 × 13,942.58
  4. Step 4: Simplify right side
    18,666.50x = 359,183,040.12
  5. Step 5: Solve for x
    x = 359,183,040.12/18,666.50
  6. Step 6: Final answer
    x = 19,242.13

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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.