Home / 31,905.83-47,865.87-9,720.94

Finding the Fourth Proportional to 31,905.83, 47,865.87 and 9,720.94

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Solution

The fourth proportional to 31,905.83, 47,865.87 and 9,720.94 is: 14,583.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.83 : 47,865.87 = 9,720.94 : x
  2. Step 2: Convert to fraction form
    31,905.83/47,865.87 = 9,720.94/x
  3. Step 3: Cross multiply
    31,905.83x = 47,865.87 × 9,720.94
  4. Step 4: Simplify right side
    31,905.83x = 465,301,130.65
  5. Step 5: Solve for x
    x = 465,301,130.65/31,905.83
  6. Step 6: Final answer
    x = 14,583.58

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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.