Home / 28,018.10-38,648.13-22,040.30

Finding the Fourth Proportional to 28,018.10, 38,648.13 and 22,040.30

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Solution

The fourth proportional to 28,018.10, 38,648.13 and 22,040.30 is: 30,402.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.10 : 38,648.13 = 22,040.30 : x
  2. Step 2: Convert to fraction form
    28,018.10/38,648.13 = 22,040.30/x
  3. Step 3: Cross multiply
    28,018.10x = 38,648.13 × 22,040.30
  4. Step 4: Simplify right side
    28,018.10x = 851,816,379.64
  5. Step 5: Solve for x
    x = 851,816,379.64/28,018.10
  6. Step 6: Final answer
    x = 30,402.36

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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.