Home / 12,720.80-19,077.79-5,323.73

Finding the Fourth Proportional to 12,720.80, 19,077.79 and 5,323.73

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Solution

The fourth proportional to 12,720.80, 19,077.79 and 5,323.73 is: 7,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.80 : 19,077.79 = 5,323.73 : x
  2. Step 2: Convert to fraction form
    12,720.80/19,077.79 = 5,323.73/x
  3. Step 3: Cross multiply
    12,720.80x = 19,077.79 × 5,323.73
  4. Step 4: Simplify right side
    12,720.80x = 101,565,002.96
  5. Step 5: Solve for x
    x = 101,565,002.96/12,720.80
  6. Step 6: Final answer
    x = 7,984.17

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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.