Home / 28,936.40-39,933.12-16,189.28

Finding the Fourth Proportional to 28,936.40, 39,933.12 and 16,189.28

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Solution

The fourth proportional to 28,936.40, 39,933.12 and 16,189.28 is: 22,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.40 : 39,933.12 = 16,189.28 : x
  2. Step 2: Convert to fraction form
    28,936.40/39,933.12 = 16,189.28/x
  3. Step 3: Cross multiply
    28,936.40x = 39,933.12 × 16,189.28
  4. Step 4: Simplify right side
    28,936.40x = 646,488,460.95
  5. Step 5: Solve for x
    x = 646,488,460.95/28,936.40
  6. Step 6: Final answer
    x = 22,341.70

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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.