Home / 13,578.04-18,737.76-7,609.96

Finding the Fourth Proportional to 13,578.04, 18,737.76 and 7,609.96

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Solution

The fourth proportional to 13,578.04, 18,737.76 and 7,609.96 is: 10,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.04 : 18,737.76 = 7,609.96 : x
  2. Step 2: Convert to fraction form
    13,578.04/18,737.76 = 7,609.96/x
  3. Step 3: Cross multiply
    13,578.04x = 18,737.76 × 7,609.96
  4. Step 4: Simplify right side
    13,578.04x = 142,593,604.09
  5. Step 5: Solve for x
    x = 142,593,604.09/13,578.04
  6. Step 6: Final answer
    x = 10,501.78

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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.