Home / 12,424.28-17,145.54-7,119

Finding the Fourth Proportional to 12,424.28, 17,145.54 and 7,119

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Solution

The fourth proportional to 12,424.28, 17,145.54 and 7,119 is: 9,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.28 : 17,145.54 = 7,119 : x
  2. Step 2: Convert to fraction form
    12,424.28/17,145.54 = 7,119/x
  3. Step 3: Cross multiply
    12,424.28x = 17,145.54 × 7,119
  4. Step 4: Simplify right side
    12,424.28x = 122,059,099.26
  5. Step 5: Solve for x
    x = 122,059,099.26/12,424.28
  6. Step 6: Final answer
    x = 9,824.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.