Home / 13,118.70-18,102.24-7,451.40

Finding the Fourth Proportional to 13,118.70, 18,102.24 and 7,451.40

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Solution

The fourth proportional to 13,118.70, 18,102.24 and 7,451.40 is: 10,282.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.70 : 18,102.24 = 7,451.40 : x
  2. Step 2: Convert to fraction form
    13,118.70/18,102.24 = 7,451.40/x
  3. Step 3: Cross multiply
    13,118.70x = 18,102.24 × 7,451.40
  4. Step 4: Simplify right side
    13,118.70x = 134,887,031.14
  5. Step 5: Solve for x
    x = 134,887,031.14/13,118.70
  6. Step 6: Final answer
    x = 10,282.04

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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.