Home / 11,428.56-17,130.24-6,487.56

Finding the Fourth Proportional to 11,428.56, 17,130.24 and 6,487.56

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Solution

The fourth proportional to 11,428.56, 17,130.24 and 6,487.56 is: 9,724.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.56 : 17,130.24 = 6,487.56 : x
  2. Step 2: Convert to fraction form
    11,428.56/17,130.24 = 6,487.56/x
  3. Step 3: Cross multiply
    11,428.56x = 17,130.24 × 6,487.56
  4. Step 4: Simplify right side
    11,428.56x = 111,133,459.81
  5. Step 5: Solve for x
    x = 111,133,459.81/11,428.56
  6. Step 6: Final answer
    x = 9,724.19

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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.