Home / 13,867.90-20,810.09-5,108.96

Finding the Fourth Proportional to 13,867.90, 20,810.09 and 5,108.96

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Solution

The fourth proportional to 13,867.90, 20,810.09 and 5,108.96 is: 7,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.90 : 20,810.09 = 5,108.96 : x
  2. Step 2: Convert to fraction form
    13,867.90/20,810.09 = 5,108.96/x
  3. Step 3: Cross multiply
    13,867.90x = 20,810.09 × 5,108.96
  4. Step 4: Simplify right side
    13,867.90x = 106,317,891.86
  5. Step 5: Solve for x
    x = 106,317,891.86/13,867.90
  6. Step 6: Final answer
    x = 7,666.48

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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.