Home / 13,428.11-20,142.38-4,068.23

Finding the Fourth Proportional to 13,428.11, 20,142.38 and 4,068.23

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Solution

The fourth proportional to 13,428.11, 20,142.38 and 4,068.23 is: 6,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.11 : 20,142.38 = 4,068.23 : x
  2. Step 2: Convert to fraction form
    13,428.11/20,142.38 = 4,068.23/x
  3. Step 3: Cross multiply
    13,428.11x = 20,142.38 × 4,068.23
  4. Step 4: Simplify right side
    13,428.11x = 81,943,744.05
  5. Step 5: Solve for x
    x = 81,943,744.05/13,428.11
  6. Step 6: Final answer
    x = 6,102.40

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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.