Home / 28,939.20-43,408.80-17,246.40

Finding the Fourth Proportional to 28,939.20, 43,408.80 and 17,246.40

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Solution

The fourth proportional to 28,939.20, 43,408.80 and 17,246.40 is: 25,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.20 : 43,408.80 = 17,246.40 : x
  2. Step 2: Convert to fraction form
    28,939.20/43,408.80 = 17,246.40/x
  3. Step 3: Cross multiply
    28,939.20x = 43,408.80 × 17,246.40
  4. Step 4: Simplify right side
    28,939.20x = 748,645,528.32
  5. Step 5: Solve for x
    x = 748,645,528.32/28,939.20
  6. Step 6: Final answer
    x = 25,869.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.