Home / 13,436.46-18,540.84-7,770.35

Finding the Fourth Proportional to 13,436.46, 18,540.84 and 7,770.35

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Solution

The fourth proportional to 13,436.46, 18,540.84 and 7,770.35 is: 10,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.46 : 18,540.84 = 7,770.35 : x
  2. Step 2: Convert to fraction form
    13,436.46/18,540.84 = 7,770.35/x
  3. Step 3: Cross multiply
    13,436.46x = 18,540.84 × 7,770.35
  4. Step 4: Simplify right side
    13,436.46x = 144,068,816.09
  5. Step 5: Solve for x
    x = 144,068,816.09/13,436.46
  6. Step 6: Final answer
    x = 10,722.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.