Home / 13,827.71-20,762.33-7,911.28

Finding the Fourth Proportional to 13,827.71, 20,762.33 and 7,911.28

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Solution

The fourth proportional to 13,827.71, 20,762.33 and 7,911.28 is: 11,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,827.71 : 20,762.33 = 7,911.28 : x
  2. Step 2: Convert to fraction form
    13,827.71/20,762.33 = 7,911.28/x
  3. Step 3: Cross multiply
    13,827.71x = 20,762.33 × 7,911.28
  4. Step 4: Simplify right side
    13,827.71x = 164,256,606.08
  5. Step 5: Solve for x
    x = 164,256,606.08/13,827.71
  6. Step 6: Final answer
    x = 11,878.80

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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.