Home / 31,501.98-47,269.44-20,405.79

Finding the Fourth Proportional to 31,501.98, 47,269.44 and 20,405.79

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Solution

The fourth proportional to 31,501.98, 47,269.44 and 20,405.79 is: 30,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,501.98 : 47,269.44 = 20,405.79 : x
  2. Step 2: Convert to fraction form
    31,501.98/47,269.44 = 20,405.79/x
  3. Step 3: Cross multiply
    31,501.98x = 47,269.44 × 20,405.79
  4. Step 4: Simplify right side
    31,501.98x = 964,570,266.06
  5. Step 5: Solve for x
    x = 964,570,266.06/31,501.98
  6. Step 6: Final answer
    x = 30,619.35

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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.