Home / 21,564.40-29,772.54-14,769.82

Finding the Fourth Proportional to 21,564.40, 29,772.54 and 14,769.82

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Solution

The fourth proportional to 21,564.40, 29,772.54 and 14,769.82 is: 20,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.40 : 29,772.54 = 14,769.82 : x
  2. Step 2: Convert to fraction form
    21,564.40/29,772.54 = 14,769.82/x
  3. Step 3: Cross multiply
    21,564.40x = 29,772.54 × 14,769.82
  4. Step 4: Simplify right side
    21,564.40x = 439,735,056.74
  5. Step 5: Solve for x
    x = 439,735,056.74/21,564.40
  6. Step 6: Final answer
    x = 20,391.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.