Home / 14,345.75-21,519.44-5,111.75

Finding the Fourth Proportional to 14,345.75, 21,519.44 and 5,111.75

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Solution

The fourth proportional to 14,345.75, 21,519.44 and 5,111.75 is: 7,667.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,345.75 : 21,519.44 = 5,111.75 : x
  2. Step 2: Convert to fraction form
    14,345.75/21,519.44 = 5,111.75/x
  3. Step 3: Cross multiply
    14,345.75x = 21,519.44 × 5,111.75
  4. Step 4: Simplify right side
    14,345.75x = 110,001,971.86
  5. Step 5: Solve for x
    x = 110,001,971.86/14,345.75
  6. Step 6: Final answer
    x = 7,667.91

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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.