Home / 28,899.20-43,348.80-9,179.30

Finding the Fourth Proportional to 28,899.20, 43,348.80 and 9,179.30

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Solution

The fourth proportional to 28,899.20, 43,348.80 and 9,179.30 is: 13,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.20 : 43,348.80 = 9,179.30 : x
  2. Step 2: Convert to fraction form
    28,899.20/43,348.80 = 9,179.30/x
  3. Step 3: Cross multiply
    28,899.20x = 43,348.80 × 9,179.30
  4. Step 4: Simplify right side
    28,899.20x = 397,911,639.84
  5. Step 5: Solve for x
    x = 397,911,639.84/28,899.20
  6. Step 6: Final answer
    x = 13,768.95

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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.