Home / 13,429.56-18,534.50-8,124.36

Finding the Fourth Proportional to 13,429.56, 18,534.50 and 8,124.36

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Solution

The fourth proportional to 13,429.56, 18,534.50 and 8,124.36 is: 11,212.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.56 : 18,534.50 = 8,124.36 : x
  2. Step 2: Convert to fraction form
    13,429.56/18,534.50 = 8,124.36/x
  3. Step 3: Cross multiply
    13,429.56x = 18,534.50 × 8,124.36
  4. Step 4: Simplify right side
    13,429.56x = 150,580,909.80
  5. Step 5: Solve for x
    x = 150,580,909.80/13,429.56
  6. Step 6: Final answer
    x = 11,212.65

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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.