Home / 13,724.15-18,938.81-7,436.39

Finding the Fourth Proportional to 13,724.15, 18,938.81 and 7,436.39

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Solution

The fourth proportional to 13,724.15, 18,938.81 and 7,436.39 is: 10,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.15 : 18,938.81 = 7,436.39 : x
  2. Step 2: Convert to fraction form
    13,724.15/18,938.81 = 7,436.39/x
  3. Step 3: Cross multiply
    13,724.15x = 18,938.81 × 7,436.39
  4. Step 4: Simplify right side
    13,724.15x = 140,836,301.19
  5. Step 5: Solve for x
    x = 140,836,301.19/13,724.15
  6. Step 6: Final answer
    x = 10,261.94

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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.