Home / 13,551.71-20,320.07-4,189.14

Finding the Fourth Proportional to 13,551.71, 20,320.07 and 4,189.14

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Solution

The fourth proportional to 13,551.71, 20,320.07 and 4,189.14 is: 6,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.71 : 20,320.07 = 4,189.14 : x
  2. Step 2: Convert to fraction form
    13,551.71/20,320.07 = 4,189.14/x
  3. Step 3: Cross multiply
    13,551.71x = 20,320.07 × 4,189.14
  4. Step 4: Simplify right side
    13,551.71x = 85,123,597.09
  5. Step 5: Solve for x
    x = 85,123,597.09/13,551.71
  6. Step 6: Final answer
    x = 6,281.39

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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.