Home / 20,848.56-31,245.72-15,900

Finding the Fourth Proportional to 20,848.56, 31,245.72 and 15,900

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Solution

The fourth proportional to 20,848.56, 31,245.72 and 15,900 is: 23,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.56 : 31,245.72 = 15,900 : x
  2. Step 2: Convert to fraction form
    20,848.56/31,245.72 = 15,900/x
  3. Step 3: Cross multiply
    20,848.56x = 31,245.72 × 15,900
  4. Step 4: Simplify right side
    20,848.56x = 496,806,948
  5. Step 5: Solve for x
    x = 496,806,948/20,848.56
  6. Step 6: Final answer
    x = 23,829.32

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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.