Home / 13,507.76-20,232.84-7,661.36

Finding the Fourth Proportional to 13,507.76, 20,232.84 and 7,661.36

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Solution

The fourth proportional to 13,507.76, 20,232.84 and 7,661.36 is: 11,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.76 : 20,232.84 = 7,661.36 : x
  2. Step 2: Convert to fraction form
    13,507.76/20,232.84 = 7,661.36/x
  3. Step 3: Cross multiply
    13,507.76x = 20,232.84 × 7,661.36
  4. Step 4: Simplify right side
    13,507.76x = 155,011,071.06
  5. Step 5: Solve for x
    x = 155,011,071.06/13,507.76
  6. Step 6: Final answer
    x = 11,475.71

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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.