Home / 13,357.28-18,429.73-8,635.88

Finding the Fourth Proportional to 13,357.28, 18,429.73 and 8,635.88

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Solution

The fourth proportional to 13,357.28, 18,429.73 and 8,635.88 is: 11,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.28 : 18,429.73 = 8,635.88 : x
  2. Step 2: Convert to fraction form
    13,357.28/18,429.73 = 8,635.88/x
  3. Step 3: Cross multiply
    13,357.28x = 18,429.73 × 8,635.88
  4. Step 4: Simplify right side
    13,357.28x = 159,156,822.97
  5. Step 5: Solve for x
    x = 159,156,822.97/13,357.28
  6. Step 6: Final answer
    x = 11,915.37

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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.