Home / 13,154.23-18,152.78-7,778.60

Finding the Fourth Proportional to 13,154.23, 18,152.78 and 7,778.60

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Solution

The fourth proportional to 13,154.23, 18,152.78 and 7,778.60 is: 10,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.23 : 18,152.78 = 7,778.60 : x
  2. Step 2: Convert to fraction form
    13,154.23/18,152.78 = 7,778.60/x
  3. Step 3: Cross multiply
    13,154.23x = 18,152.78 × 7,778.60
  4. Step 4: Simplify right side
    13,154.23x = 141,203,152.92
  5. Step 5: Solve for x
    x = 141,203,152.92/13,154.23
  6. Step 6: Final answer
    x = 10,734.43

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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.