Home / 13,723.28-18,938.08-7,435.64

Finding the Fourth Proportional to 13,723.28, 18,938.08 and 7,435.64

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Solution

The fourth proportional to 13,723.28, 18,938.08 and 7,435.64 is: 10,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.28 : 18,938.08 = 7,435.64 : x
  2. Step 2: Convert to fraction form
    13,723.28/18,938.08 = 7,435.64/x
  3. Step 3: Cross multiply
    13,723.28x = 18,938.08 × 7,435.64
  4. Step 4: Simplify right side
    13,723.28x = 140,816,745.17
  5. Step 5: Solve for x
    x = 140,816,745.17/13,723.28
  6. Step 6: Final answer
    x = 10,261.16

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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.