Home / 12,877.92-17,772.66-7,212.58

Finding the Fourth Proportional to 12,877.92, 17,772.66 and 7,212.58

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Solution

The fourth proportional to 12,877.92, 17,772.66 and 7,212.58 is: 9,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.92 : 17,772.66 = 7,212.58 : x
  2. Step 2: Convert to fraction form
    12,877.92/17,772.66 = 7,212.58/x
  3. Step 3: Cross multiply
    12,877.92x = 17,772.66 × 7,212.58
  4. Step 4: Simplify right side
    12,877.92x = 128,186,732.06
  5. Step 5: Solve for x
    x = 128,186,732.06/12,877.92
  6. Step 6: Final answer
    x = 9,953.99

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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.