Home / 28,968.48-39,983.28-18,879.48

Finding the Fourth Proportional to 28,968.48, 39,983.28 and 18,879.48

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Solution

The fourth proportional to 28,968.48, 39,983.28 and 18,879.48 is: 26,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968.48 : 39,983.28 = 18,879.48 : x
  2. Step 2: Convert to fraction form
    28,968.48/39,983.28 = 18,879.48/x
  3. Step 3: Cross multiply
    28,968.48x = 39,983.28 × 18,879.48
  4. Step 4: Simplify right side
    28,968.48x = 754,863,535.09
  5. Step 5: Solve for x
    x = 754,863,535.09/28,968.48
  6. Step 6: Final answer
    x = 26,058.10

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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.