Home / 10,856.40-16,273.48-4,279.92

Finding the Fourth Proportional to 10,856.40, 16,273.48 and 4,279.92

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Solution

The fourth proportional to 10,856.40, 16,273.48 and 4,279.92 is: 6,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.40 : 16,273.48 = 4,279.92 : x
  2. Step 2: Convert to fraction form
    10,856.40/16,273.48 = 4,279.92/x
  3. Step 3: Cross multiply
    10,856.40x = 16,273.48 × 4,279.92
  4. Step 4: Simplify right side
    10,856.40x = 69,649,192.52
  5. Step 5: Solve for x
    x = 69,649,192.52/10,856.40
  6. Step 6: Final answer
    x = 6,415.50

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1.5x scale

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.