Home / 12,730.15-19,087.53-5,330.80

Finding the Fourth Proportional to 12,730.15, 19,087.53 and 5,330.80

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Solution

The fourth proportional to 12,730.15, 19,087.53 and 5,330.80 is: 7,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.15 : 19,087.53 = 5,330.80 : x
  2. Step 2: Convert to fraction form
    12,730.15/19,087.53 = 5,330.80/x
  3. Step 3: Cross multiply
    12,730.15x = 19,087.53 × 5,330.80
  4. Step 4: Simplify right side
    12,730.15x = 101,751,804.92
  5. Step 5: Solve for x
    x = 101,751,804.92/12,730.15
  6. Step 6: Final answer
    x = 7,992.98

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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.