Home / 31,338.45-47,019.96-13,795.98

Finding the Fourth Proportional to 31,338.45, 47,019.96 and 13,795.98

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Solution

The fourth proportional to 31,338.45, 47,019.96 and 13,795.98 is: 20,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.45 : 47,019.96 = 13,795.98 : x
  2. Step 2: Convert to fraction form
    31,338.45/47,019.96 = 13,795.98/x
  3. Step 3: Cross multiply
    31,338.45x = 47,019.96 × 13,795.98
  4. Step 4: Simplify right side
    31,338.45x = 648,686,427.76
  5. Step 5: Solve for x
    x = 648,686,427.76/31,338.45
  6. Step 6: Final answer
    x = 20,699.38

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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.