Home / 13,723.68-18,938.70-7,436.04

Finding the Fourth Proportional to 13,723.68, 18,938.70 and 7,436.04

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Solution

The fourth proportional to 13,723.68, 18,938.70 and 7,436.04 is: 10,261.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.68 : 18,938.70 = 7,436.04 : x
  2. Step 2: Convert to fraction form
    13,723.68/18,938.70 = 7,436.04/x
  3. Step 3: Cross multiply
    13,723.68x = 18,938.70 × 7,436.04
  4. Step 4: Simplify right side
    13,723.68x = 140,828,930.75
  5. Step 5: Solve for x
    x = 140,828,930.75/13,723.68
  6. Step 6: Final answer
    x = 10,261.75

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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.