Home / 28,289.21-42,369.17-13,508.48

Finding the Fourth Proportional to 28,289.21, 42,369.17 and 13,508.48

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Solution

The fourth proportional to 28,289.21, 42,369.17 and 13,508.48 is: 20,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.21 : 42,369.17 = 13,508.48 : x
  2. Step 2: Convert to fraction form
    28,289.21/42,369.17 = 13,508.48/x
  3. Step 3: Cross multiply
    28,289.21x = 42,369.17 × 13,508.48
  4. Step 4: Simplify right side
    28,289.21x = 572,342,806.17
  5. Step 5: Solve for x
    x = 572,342,806.17/28,289.21
  6. Step 6: Final answer
    x = 20,231.84

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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.