Home / 13,503.28-18,637.24-7,839.26

Finding the Fourth Proportional to 13,503.28, 18,637.24 and 7,839.26

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Solution

The fourth proportional to 13,503.28, 18,637.24 and 7,839.26 is: 10,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.28 : 18,637.24 = 7,839.26 : x
  2. Step 2: Convert to fraction form
    13,503.28/18,637.24 = 7,839.26/x
  3. Step 3: Cross multiply
    13,503.28x = 18,637.24 × 7,839.26
  4. Step 4: Simplify right side
    13,503.28x = 146,102,170.04
  5. Step 5: Solve for x
    x = 146,102,170.04/13,503.28
  6. Step 6: Final answer
    x = 10,819.75

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1.5x scale

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.