Home / 13,428.03-20,145.21-13,204.89

Finding the Fourth Proportional to 13,428.03, 20,145.21 and 13,204.89

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Solution

The fourth proportional to 13,428.03, 20,145.21 and 13,204.89 is: 19,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.03 : 20,145.21 = 13,204.89 : x
  2. Step 2: Convert to fraction form
    13,428.03/20,145.21 = 13,204.89/x
  3. Step 3: Cross multiply
    13,428.03x = 20,145.21 × 13,204.89
  4. Step 4: Simplify right side
    13,428.03x = 266,015,282.08
  5. Step 5: Solve for x
    x = 266,015,282.08/13,428.03
  6. Step 6: Final answer
    x = 19,810.45

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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.