Home / 28,480.48-39,314.28-18,788.38

Finding the Fourth Proportional to 28,480.48, 39,314.28 and 18,788.38

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Solution

The fourth proportional to 28,480.48, 39,314.28 and 18,788.38 is: 25,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.48 : 39,314.28 = 18,788.38 : x
  2. Step 2: Convert to fraction form
    28,480.48/39,314.28 = 18,788.38/x
  3. Step 3: Cross multiply
    28,480.48x = 39,314.28 × 18,788.38
  4. Step 4: Simplify right side
    28,480.48x = 738,651,632.07
  5. Step 5: Solve for x
    x = 738,651,632.07/28,480.48
  6. Step 6: Final answer
    x = 25,935.36

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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.