Home / 13,635.40-18,818.40-7,586.24

Finding the Fourth Proportional to 13,635.40, 18,818.40 and 7,586.24

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Solution

The fourth proportional to 13,635.40, 18,818.40 and 7,586.24 is: 10,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.40 : 18,818.40 = 7,586.24 : x
  2. Step 2: Convert to fraction form
    13,635.40/18,818.40 = 7,586.24/x
  3. Step 3: Cross multiply
    13,635.40x = 18,818.40 × 7,586.24
  4. Step 4: Simplify right side
    13,635.40x = 142,760,898.82
  5. Step 5: Solve for x
    x = 142,760,898.82/13,635.40
  6. Step 6: Final answer
    x = 10,469.87

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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.