Home / 13,019.86-19,530.81-4,255.66

Finding the Fourth Proportional to 13,019.86, 19,530.81 and 4,255.66

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Solution

The fourth proportional to 13,019.86, 19,530.81 and 4,255.66 is: 6,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.86 : 19,530.81 = 4,255.66 : x
  2. Step 2: Convert to fraction form
    13,019.86/19,530.81 = 4,255.66/x
  3. Step 3: Cross multiply
    13,019.86x = 19,530.81 × 4,255.66
  4. Step 4: Simplify right side
    13,019.86x = 83,116,495.34
  5. Step 5: Solve for x
    x = 83,116,495.34/13,019.86
  6. Step 6: Final answer
    x = 6,383.82

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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.