Home / 10,271.28-15,406.98-3,345.78

Finding the Fourth Proportional to 10,271.28, 15,406.98 and 3,345.78

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Solution

The fourth proportional to 10,271.28, 15,406.98 and 3,345.78 is: 5,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,271.28 : 15,406.98 = 3,345.78 : x
  2. Step 2: Convert to fraction form
    10,271.28/15,406.98 = 3,345.78/x
  3. Step 3: Cross multiply
    10,271.28x = 15,406.98 × 3,345.78
  4. Step 4: Simplify right side
    10,271.28x = 51,548,365.54
  5. Step 5: Solve for x
    x = 51,548,365.54/10,271.28
  6. Step 6: Final answer
    x = 5,018.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.