Home / 28,883.40-39,837.75-18,262.80

Finding the Fourth Proportional to 28,883.40, 39,837.75 and 18,262.80

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Solution

The fourth proportional to 28,883.40, 39,837.75 and 18,262.80 is: 25,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,883.40 : 39,837.75 = 18,262.80 : x
  2. Step 2: Convert to fraction form
    28,883.40/39,837.75 = 18,262.80/x
  3. Step 3: Cross multiply
    28,883.40x = 39,837.75 × 18,262.80
  4. Step 4: Simplify right side
    28,883.40x = 727,548,860.70
  5. Step 5: Solve for x
    x = 727,548,860.70/28,883.40
  6. Step 6: Final answer
    x = 25,189.17

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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.