Home / 12,539.19-17,309.66-8,007.81

Finding the Fourth Proportional to 12,539.19, 17,309.66 and 8,007.81

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Solution

The fourth proportional to 12,539.19, 17,309.66 and 8,007.81 is: 11,054.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.19 : 17,309.66 = 8,007.81 : x
  2. Step 2: Convert to fraction form
    12,539.19/17,309.66 = 8,007.81/x
  3. Step 3: Cross multiply
    12,539.19x = 17,309.66 × 8,007.81
  4. Step 4: Simplify right side
    12,539.19x = 138,612,460.86
  5. Step 5: Solve for x
    x = 138,612,460.86/12,539.19
  6. Step 6: Final answer
    x = 11,054.34

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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.