Home / 14,159.09-19,539.11-8,109.12

Finding the Fourth Proportional to 14,159.09, 19,539.11 and 8,109.12

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Solution

The fourth proportional to 14,159.09, 19,539.11 and 8,109.12 is: 11,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.09 : 19,539.11 = 8,109.12 : x
  2. Step 2: Convert to fraction form
    14,159.09/19,539.11 = 8,109.12/x
  3. Step 3: Cross multiply
    14,159.09x = 19,539.11 × 8,109.12
  4. Step 4: Simplify right side
    14,159.09x = 158,444,947.14
  5. Step 5: Solve for x
    x = 158,444,947.14/14,159.09
  6. Step 6: Final answer
    x = 11,190.34

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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.