Home / 13,507.76-20,260.22-6,390.29

Finding the Fourth Proportional to 13,507.76, 20,260.22 and 6,390.29

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Solution

The fourth proportional to 13,507.76, 20,260.22 and 6,390.29 is: 9,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.76 : 20,260.22 = 6,390.29 : x
  2. Step 2: Convert to fraction form
    13,507.76/20,260.22 = 6,390.29/x
  3. Step 3: Cross multiply
    13,507.76x = 20,260.22 × 6,390.29
  4. Step 4: Simplify right side
    13,507.76x = 129,468,548.01
  5. Step 5: Solve for x
    x = 129,468,548.01/13,507.76
  6. Step 6: Final answer
    x = 9,584.76

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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.