Home / 13,436.09-20,126.70-6,394.80

Finding the Fourth Proportional to 13,436.09, 20,126.70 and 6,394.80

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Solution

The fourth proportional to 13,436.09, 20,126.70 and 6,394.80 is: 9,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.09 : 20,126.70 = 6,394.80 : x
  2. Step 2: Convert to fraction form
    13,436.09/20,126.70 = 6,394.80/x
  3. Step 3: Cross multiply
    13,436.09x = 20,126.70 × 6,394.80
  4. Step 4: Simplify right side
    13,436.09x = 128,706,221.16
  5. Step 5: Solve for x
    x = 128,706,221.16/13,436.09
  6. Step 6: Final answer
    x = 9,579.14

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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.