Home / 14,079.75-19,430.96-8,111.30

Finding the Fourth Proportional to 14,079.75, 19,430.96 and 8,111.30

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Solution

The fourth proportional to 14,079.75, 19,430.96 and 8,111.30 is: 11,194.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.75 : 19,430.96 = 8,111.30 : x
  2. Step 2: Convert to fraction form
    14,079.75/19,430.96 = 8,111.30/x
  3. Step 3: Cross multiply
    14,079.75x = 19,430.96 × 8,111.30
  4. Step 4: Simplify right side
    14,079.75x = 157,610,208.14
  5. Step 5: Solve for x
    x = 157,610,208.14/14,079.75
  6. Step 6: Final answer
    x = 11,194.11

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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.