Home / 16,899.20-23,320.80-9,345.44

Finding the Fourth Proportional to 16,899.20, 23,320.80 and 9,345.44

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Solution

The fourth proportional to 16,899.20, 23,320.80 and 9,345.44 is: 12,896.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,899.20 : 23,320.80 = 9,345.44 : x
  2. Step 2: Convert to fraction form
    16,899.20/23,320.80 = 9,345.44/x
  3. Step 3: Cross multiply
    16,899.20x = 23,320.80 × 9,345.44
  4. Step 4: Simplify right side
    16,899.20x = 217,943,137.15
  5. Step 5: Solve for x
    x = 217,943,137.15/16,899.20
  6. Step 6: Final answer
    x = 12,896.65

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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.