Home / 10,908.81-15,055.38-6,129.54

Finding the Fourth Proportional to 10,908.81, 15,055.38 and 6,129.54

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Solution

The fourth proportional to 10,908.81, 15,055.38 and 6,129.54 is: 8,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.81 : 15,055.38 = 6,129.54 : x
  2. Step 2: Convert to fraction form
    10,908.81/15,055.38 = 6,129.54/x
  3. Step 3: Cross multiply
    10,908.81x = 15,055.38 × 6,129.54
  4. Step 4: Simplify right side
    10,908.81x = 92,282,553.93
  5. Step 5: Solve for x
    x = 92,282,553.93/10,908.81
  6. Step 6: Final answer
    x = 8,459.45

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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.