Home / 12,923.92-19,385.84-8,540.40

Finding the Fourth Proportional to 12,923.92, 19,385.84 and 8,540.40

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Solution

The fourth proportional to 12,923.92, 19,385.84 and 8,540.40 is: 12,810.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.92 : 19,385.84 = 8,540.40 : x
  2. Step 2: Convert to fraction form
    12,923.92/19,385.84 = 8,540.40/x
  3. Step 3: Cross multiply
    12,923.92x = 19,385.84 × 8,540.40
  4. Step 4: Simplify right side
    12,923.92x = 165,562,827.94
  5. Step 5: Solve for x
    x = 165,562,827.94/12,923.92
  6. Step 6: Final answer
    x = 12,810.57

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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.