Home / 12,972.83-17,903.42-7,230.65

Finding the Fourth Proportional to 12,972.83, 17,903.42 and 7,230.65

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Solution

The fourth proportional to 12,972.83, 17,903.42 and 7,230.65 is: 9,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.83 : 17,903.42 = 7,230.65 : x
  2. Step 2: Convert to fraction form
    12,972.83/17,903.42 = 7,230.65/x
  3. Step 3: Cross multiply
    12,972.83x = 17,903.42 × 7,230.65
  4. Step 4: Simplify right side
    12,972.83x = 129,453,238.15
  5. Step 5: Solve for x
    x = 129,453,238.15/12,972.83
  6. Step 6: Final answer
    x = 9,978.80

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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.