Home / 28,189.06-38,883.30-18,130.62

Finding the Fourth Proportional to 28,189.06, 38,883.30 and 18,130.62

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Solution

The fourth proportional to 28,189.06, 38,883.30 and 18,130.62 is: 25,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.06 : 38,883.30 = 18,130.62 : x
  2. Step 2: Convert to fraction form
    28,189.06/38,883.30 = 18,130.62/x
  3. Step 3: Cross multiply
    28,189.06x = 38,883.30 × 18,130.62
  4. Step 4: Simplify right side
    28,189.06x = 704,978,336.65
  5. Step 5: Solve for x
    x = 704,978,336.65/28,189.06
  6. Step 6: Final answer
    x = 25,008.93

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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.