Home / 13,723.42-18,938.28-7,435.78

Finding the Fourth Proportional to 13,723.42, 18,938.28 and 7,435.78

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Solution

The fourth proportional to 13,723.42, 18,938.28 and 7,435.78 is: 10,261.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.42 : 18,938.28 = 7,435.78 : x
  2. Step 2: Convert to fraction form
    13,723.42/18,938.28 = 7,435.78/x
  3. Step 3: Cross multiply
    13,723.42x = 18,938.28 × 7,435.78
  4. Step 4: Simplify right side
    13,723.42x = 140,820,883.66
  5. Step 5: Solve for x
    x = 140,820,883.66/13,723.42
  6. Step 6: Final answer
    x = 10,261.35

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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.