Home / 12,864.57-19,265.71-8,904.73

Finding the Fourth Proportional to 12,864.57, 19,265.71 and 8,904.73

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Solution

The fourth proportional to 12,864.57, 19,265.71 and 8,904.73 is: 13,335.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.57 : 19,265.71 = 8,904.73 : x
  2. Step 2: Convert to fraction form
    12,864.57/19,265.71 = 8,904.73/x
  3. Step 3: Cross multiply
    12,864.57x = 19,265.71 × 8,904.73
  4. Step 4: Simplify right side
    12,864.57x = 171,555,901.28
  5. Step 5: Solve for x
    x = 171,555,901.28/12,864.57
  6. Step 6: Final answer
    x = 13,335.54

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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.