Home / 20,669.84-28,513.32-14,371.28

Finding the Fourth Proportional to 20,669.84, 28,513.32 and 14,371.28

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Solution

The fourth proportional to 20,669.84, 28,513.32 and 14,371.28 is: 19,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.84 : 28,513.32 = 14,371.28 : x
  2. Step 2: Convert to fraction form
    20,669.84/28,513.32 = 14,371.28/x
  3. Step 3: Cross multiply
    20,669.84x = 28,513.32 × 14,371.28
  4. Step 4: Simplify right side
    20,669.84x = 409,772,905.45
  5. Step 5: Solve for x
    x = 409,772,905.45/20,669.84
  6. Step 6: Final answer
    x = 19,824.68

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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.