Home / 28,290.56-42,371.24-13,509.88

Finding the Fourth Proportional to 28,290.56, 42,371.24 and 13,509.88

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Solution

The fourth proportional to 28,290.56, 42,371.24 and 13,509.88 is: 20,233.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.56 : 42,371.24 = 13,509.88 : x
  2. Step 2: Convert to fraction form
    28,290.56/42,371.24 = 13,509.88/x
  3. Step 3: Cross multiply
    28,290.56x = 42,371.24 × 13,509.88
  4. Step 4: Simplify right side
    28,290.56x = 572,430,194.37
  5. Step 5: Solve for x
    x = 572,430,194.37/28,290.56
  6. Step 6: Final answer
    x = 20,233.97

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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.