Home / 13,141.35-18,134.28-7,475.28

Finding the Fourth Proportional to 13,141.35, 18,134.28 and 7,475.28

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Solution

The fourth proportional to 13,141.35, 18,134.28 and 7,475.28 is: 10,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.35 : 18,134.28 = 7,475.28 : x
  2. Step 2: Convert to fraction form
    13,141.35/18,134.28 = 7,475.28/x
  3. Step 3: Cross multiply
    13,141.35x = 18,134.28 × 7,475.28
  4. Step 4: Simplify right side
    13,141.35x = 135,558,820.60
  5. Step 5: Solve for x
    x = 135,558,820.60/13,141.35
  6. Step 6: Final answer
    x = 10,315.44

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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.