Home / 13,428.33-20,143.89-6,407.16

Finding the Fourth Proportional to 13,428.33, 20,143.89 and 6,407.16

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Solution

The fourth proportional to 13,428.33, 20,143.89 and 6,407.16 is: 9,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.33 : 20,143.89 = 6,407.16 : x
  2. Step 2: Convert to fraction form
    13,428.33/20,143.89 = 6,407.16/x
  3. Step 3: Cross multiply
    13,428.33x = 20,143.89 × 6,407.16
  4. Step 4: Simplify right side
    13,428.33x = 129,065,126.25
  5. Step 5: Solve for x
    x = 129,065,126.25/13,428.33
  6. Step 6: Final answer
    x = 9,611.41

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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.