Home / 13,699.71-20,550.75-3,838.95

Finding the Fourth Proportional to 13,699.71, 20,550.75 and 3,838.95

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Solution

The fourth proportional to 13,699.71, 20,550.75 and 3,838.95 is: 5,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.71 : 20,550.75 = 3,838.95 : x
  2. Step 2: Convert to fraction form
    13,699.71/20,550.75 = 3,838.95/x
  3. Step 3: Cross multiply
    13,699.71x = 20,550.75 × 3,838.95
  4. Step 4: Simplify right side
    13,699.71x = 78,893,301.71
  5. Step 5: Solve for x
    x = 78,893,301.71/13,699.71
  6. Step 6: Final answer
    x = 5,758.76

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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.