Home / 13,141.12-18,135.12-7,475.17

Finding the Fourth Proportional to 13,141.12, 18,135.12 and 7,475.17

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Solution

The fourth proportional to 13,141.12, 18,135.12 and 7,475.17 is: 10,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.12 : 18,135.12 = 7,475.17 : x
  2. Step 2: Convert to fraction form
    13,141.12/18,135.12 = 7,475.17/x
  3. Step 3: Cross multiply
    13,141.12x = 18,135.12 × 7,475.17
  4. Step 4: Simplify right side
    13,141.12x = 135,563,104.97
  5. Step 5: Solve for x
    x = 135,563,104.97/13,141.12
  6. Step 6: Final answer
    x = 10,315.95

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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.