Home / 13,539.48-20,309.76-4,178.67

Finding the Fourth Proportional to 13,539.48, 20,309.76 and 4,178.67

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Solution

The fourth proportional to 13,539.48, 20,309.76 and 4,178.67 is: 6,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.48 : 20,309.76 = 4,178.67 : x
  2. Step 2: Convert to fraction form
    13,539.48/20,309.76 = 4,178.67/x
  3. Step 3: Cross multiply
    13,539.48x = 20,309.76 × 4,178.67
  4. Step 4: Simplify right side
    13,539.48x = 84,867,784.82
  5. Step 5: Solve for x
    x = 84,867,784.82/13,539.48
  6. Step 6: Final answer
    x = 6,268.17

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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.