Home / 28,238.30-42,329.90-13,443.24

Finding the Fourth Proportional to 28,238.30, 42,329.90 and 13,443.24

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Solution

The fourth proportional to 28,238.30, 42,329.90 and 13,443.24 is: 20,151.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.30 : 42,329.90 = 13,443.24 : x
  2. Step 2: Convert to fraction form
    28,238.30/42,329.90 = 13,443.24/x
  3. Step 3: Cross multiply
    28,238.30x = 42,329.90 × 13,443.24
  4. Step 4: Simplify right side
    28,238.30x = 569,051,004.88
  5. Step 5: Solve for x
    x = 569,051,004.88/28,238.30
  6. Step 6: Final answer
    x = 20,151.74

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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.