Home / 13,942.36-19,257.78-10,421.56

Finding the Fourth Proportional to 13,942.36, 19,257.78 and 10,421.56

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Solution

The fourth proportional to 13,942.36, 19,257.78 and 10,421.56 is: 14,394.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.36 : 19,257.78 = 10,421.56 : x
  2. Step 2: Convert to fraction form
    13,942.36/19,257.78 = 10,421.56/x
  3. Step 3: Cross multiply
    13,942.36x = 19,257.78 × 10,421.56
  4. Step 4: Simplify right side
    13,942.36x = 200,696,109.74
  5. Step 5: Solve for x
    x = 200,696,109.74/13,942.36
  6. Step 6: Final answer
    x = 14,394.70

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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.