Home / 28,065.45-38,720.39-17,999.33

Finding the Fourth Proportional to 28,065.45, 38,720.39 and 17,999.33

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Solution

The fourth proportional to 28,065.45, 38,720.39 and 17,999.33 is: 24,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.45 : 38,720.39 = 17,999.33 : x
  2. Step 2: Convert to fraction form
    28,065.45/38,720.39 = 17,999.33/x
  3. Step 3: Cross multiply
    28,065.45x = 38,720.39 × 17,999.33
  4. Step 4: Simplify right side
    28,065.45x = 696,941,077.34
  5. Step 5: Solve for x
    x = 696,941,077.34/28,065.45
  6. Step 6: Final answer
    x = 24,832.71

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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.