Home / 18,942.09-28,421.33-10,166.76

Finding the Fourth Proportional to 18,942.09, 28,421.33 and 10,166.76

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Solution

The fourth proportional to 18,942.09, 28,421.33 and 10,166.76 is: 15,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.09 : 28,421.33 = 10,166.76 : x
  2. Step 2: Convert to fraction form
    18,942.09/28,421.33 = 10,166.76/x
  3. Step 3: Cross multiply
    18,942.09x = 28,421.33 × 10,166.76
  4. Step 4: Simplify right side
    18,942.09x = 288,952,840.99
  5. Step 5: Solve for x
    x = 288,952,840.99/18,942.09
  6. Step 6: Final answer
    x = 15,254.54

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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.