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Finding the Fourth Proportional to 13,673.52, 20,510.30 and 3,813.05

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Solution

The fourth proportional to 13,673.52, 20,510.30 and 3,813.05 is: 5,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.52 : 20,510.30 = 3,813.05 : x
  2. Step 2: Convert to fraction form
    13,673.52/20,510.30 = 3,813.05/x
  3. Step 3: Cross multiply
    13,673.52x = 20,510.30 × 3,813.05
  4. Step 4: Simplify right side
    13,673.52x = 78,206,831.63
  5. Step 5: Solve for x
    x = 78,206,831.63/13,673.52
  6. Step 6: Final answer
    x = 5,719.58

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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.