Home / 10,856.40-16,279.72-3,459.48

Finding the Fourth Proportional to 10,856.40, 16,279.72 and 3,459.48

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Solution

The fourth proportional to 10,856.40, 16,279.72 and 3,459.48 is: 5,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.40 : 16,279.72 = 3,459.48 : x
  2. Step 2: Convert to fraction form
    10,856.40/16,279.72 = 3,459.48/x
  3. Step 3: Cross multiply
    10,856.40x = 16,279.72 × 3,459.48
  4. Step 4: Simplify right side
    10,856.40x = 56,319,365.75
  5. Step 5: Solve for x
    x = 56,319,365.75/10,856.40
  6. Step 6: Final answer
    x = 5,187.66

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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.