Home / 18,669.28-25,748.40-13,957.60

Finding the Fourth Proportional to 18,669.28, 25,748.40 and 13,957.60

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Solution

The fourth proportional to 18,669.28, 25,748.40 and 13,957.60 is: 19,250.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.28 : 25,748.40 = 13,957.60 : x
  2. Step 2: Convert to fraction form
    18,669.28/25,748.40 = 13,957.60/x
  3. Step 3: Cross multiply
    18,669.28x = 25,748.40 × 13,957.60
  4. Step 4: Simplify right side
    18,669.28x = 359,385,867.84
  5. Step 5: Solve for x
    x = 359,385,867.84/18,669.28
  6. Step 6: Final answer
    x = 19,250.12

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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.