Home / 13,501.69-20,257.09-8,507.81

Finding the Fourth Proportional to 13,501.69, 20,257.09 and 8,507.81

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Solution

The fourth proportional to 13,501.69, 20,257.09 and 8,507.81 is: 12,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.69 : 20,257.09 = 8,507.81 : x
  2. Step 2: Convert to fraction form
    13,501.69/20,257.09 = 8,507.81/x
  3. Step 3: Cross multiply
    13,501.69x = 20,257.09 × 8,507.81
  4. Step 4: Simplify right side
    13,501.69x = 172,343,472.87
  5. Step 5: Solve for x
    x = 172,343,472.87/13,501.69
  6. Step 6: Final answer
    x = 12,764.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.