Home / 13,499.69-20,254.09-8,505.81

Finding the Fourth Proportional to 13,499.69, 20,254.09 and 8,505.81

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Solution

The fourth proportional to 13,499.69, 20,254.09 and 8,505.81 is: 12,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.69 : 20,254.09 = 8,505.81 : x
  2. Step 2: Convert to fraction form
    13,499.69/20,254.09 = 8,505.81/x
  3. Step 3: Cross multiply
    13,499.69x = 20,254.09 × 8,505.81
  4. Step 4: Simplify right side
    13,499.69x = 172,277,423.99
  5. Step 5: Solve for x
    x = 172,277,423.99/13,499.69
  6. Step 6: Final answer
    x = 12,761.59

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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.