Home / 13,723.40-18,938.31-7,435.77

Finding the Fourth Proportional to 13,723.40, 18,938.31 and 7,435.77

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Solution

The fourth proportional to 13,723.40, 18,938.31 and 7,435.77 is: 10,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.40 : 18,938.31 = 7,435.77 : x
  2. Step 2: Convert to fraction form
    13,723.40/18,938.31 = 7,435.77/x
  3. Step 3: Cross multiply
    13,723.40x = 18,938.31 × 7,435.77
  4. Step 4: Simplify right side
    13,723.40x = 140,820,917.35
  5. Step 5: Solve for x
    x = 140,820,917.35/13,723.40
  6. Step 6: Final answer
    x = 10,261.37

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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.