Home / 13,141.31-18,135.41-7,476.89

Finding the Fourth Proportional to 13,141.31, 18,135.41 and 7,476.89

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Solution

The fourth proportional to 13,141.31, 18,135.41 and 7,476.89 is: 10,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.31 : 18,135.41 = 7,476.89 : x
  2. Step 2: Convert to fraction form
    13,141.31/18,135.41 = 7,476.89/x
  3. Step 3: Cross multiply
    13,141.31x = 18,135.41 × 7,476.89
  4. Step 4: Simplify right side
    13,141.31x = 135,596,337.61
  5. Step 5: Solve for x
    x = 135,596,337.61/13,141.31
  6. Step 6: Final answer
    x = 10,318.33

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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.