Home / 18,745.63-28,096.57-10,421.66

Finding the Fourth Proportional to 18,745.63, 28,096.57 and 10,421.66

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Solution

The fourth proportional to 18,745.63, 28,096.57 and 10,421.66 is: 15,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.63 : 28,096.57 = 10,421.66 : x
  2. Step 2: Convert to fraction form
    18,745.63/28,096.57 = 10,421.66/x
  3. Step 3: Cross multiply
    18,745.63x = 28,096.57 × 10,421.66
  4. Step 4: Simplify right side
    18,745.63x = 292,812,899.71
  5. Step 5: Solve for x
    x = 292,812,899.71/18,745.63
  6. Step 6: Final answer
    x = 15,620.33

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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.