Home / 13,134.40-18,105.36-9,346.24

Finding the Fourth Proportional to 13,134.40, 18,105.36 and 9,346.24

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Solution

The fourth proportional to 13,134.40, 18,105.36 and 9,346.24 is: 12,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.40 : 18,105.36 = 9,346.24 : x
  2. Step 2: Convert to fraction form
    13,134.40/18,105.36 = 9,346.24/x
  3. Step 3: Cross multiply
    13,134.40x = 18,105.36 × 9,346.24
  4. Step 4: Simplify right side
    13,134.40x = 169,217,039.85
  5. Step 5: Solve for x
    x = 169,217,039.85/13,134.40
  6. Step 6: Final answer
    x = 12,883.50

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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.