Home / 13,313.50-19,969.71-3,953.14

Finding the Fourth Proportional to 13,313.50, 19,969.71 and 3,953.14

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Solution

The fourth proportional to 13,313.50, 19,969.71 and 3,953.14 is: 5,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.50 : 19,969.71 = 3,953.14 : x
  2. Step 2: Convert to fraction form
    13,313.50/19,969.71 = 3,953.14/x
  3. Step 3: Cross multiply
    13,313.50x = 19,969.71 × 3,953.14
  4. Step 4: Simplify right side
    13,313.50x = 78,943,059.39
  5. Step 5: Solve for x
    x = 78,943,059.39/13,313.50
  6. Step 6: Final answer
    x = 5,929.55

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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.