Home / 13,856.06-20,784.09-5,539.79

Finding the Fourth Proportional to 13,856.06, 20,784.09 and 5,539.79

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Solution

The fourth proportional to 13,856.06, 20,784.09 and 5,539.79 is: 8,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.06 : 20,784.09 = 5,539.79 : x
  2. Step 2: Convert to fraction form
    13,856.06/20,784.09 = 5,539.79/x
  3. Step 3: Cross multiply
    13,856.06x = 20,784.09 × 5,539.79
  4. Step 4: Simplify right side
    13,856.06x = 115,139,566.68
  5. Step 5: Solve for x
    x = 115,139,566.68/13,856.06
  6. Step 6: Final answer
    x = 8,309.69

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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.