Home / 13,290.33-19,935.57-3,428.93

Finding the Fourth Proportional to 13,290.33, 19,935.57 and 3,428.93

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Solution

The fourth proportional to 13,290.33, 19,935.57 and 3,428.93 is: 5,143.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.33 : 19,935.57 = 3,428.93 : x
  2. Step 2: Convert to fraction form
    13,290.33/19,935.57 = 3,428.93/x
  3. Step 3: Cross multiply
    13,290.33x = 19,935.57 × 3,428.93
  4. Step 4: Simplify right side
    13,290.33x = 68,357,717.45
  5. Step 5: Solve for x
    x = 68,357,717.45/13,290.33
  6. Step 6: Final answer
    x = 5,143.42

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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.