Home / 12,933.09-19,382.87-5,428.14

Finding the Fourth Proportional to 12,933.09, 19,382.87 and 5,428.14

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Solution

The fourth proportional to 12,933.09, 19,382.87 and 5,428.14 is: 8,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,933.09 : 19,382.87 = 5,428.14 : x
  2. Step 2: Convert to fraction form
    12,933.09/19,382.87 = 5,428.14/x
  3. Step 3: Cross multiply
    12,933.09x = 19,382.87 × 5,428.14
  4. Step 4: Simplify right side
    12,933.09x = 105,212,931.96
  5. Step 5: Solve for x
    x = 105,212,931.96/12,933.09
  6. Step 6: Final answer
    x = 8,135.17

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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.