Home / 13,420.45-20,132.08-4,536.82

Finding the Fourth Proportional to 13,420.45, 20,132.08 and 4,536.82

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Solution

The fourth proportional to 13,420.45, 20,132.08 and 4,536.82 is: 6,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.45 : 20,132.08 = 4,536.82 : x
  2. Step 2: Convert to fraction form
    13,420.45/20,132.08 = 4,536.82/x
  3. Step 3: Cross multiply
    13,420.45x = 20,132.08 × 4,536.82
  4. Step 4: Simplify right side
    13,420.45x = 91,335,623.19
  5. Step 5: Solve for x
    x = 91,335,623.19/13,420.45
  6. Step 6: Final answer
    x = 6,805.70

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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.