Home / 13,604.76-18,776.30-7,638.35

Finding the Fourth Proportional to 13,604.76, 18,776.30 and 7,638.35

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Solution

The fourth proportional to 13,604.76, 18,776.30 and 7,638.35 is: 10,541.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.76 : 18,776.30 = 7,638.35 : x
  2. Step 2: Convert to fraction form
    13,604.76/18,776.30 = 7,638.35/x
  3. Step 3: Cross multiply
    13,604.76x = 18,776.30 × 7,638.35
  4. Step 4: Simplify right side
    13,604.76x = 143,419,819.03
  5. Step 5: Solve for x
    x = 143,419,819.03/13,604.76
  6. Step 6: Final answer
    x = 10,541.89

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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.