Home / 12,848.54-17,732.13-7,811.56

Finding the Fourth Proportional to 12,848.54, 17,732.13 and 7,811.56

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Solution

The fourth proportional to 12,848.54, 17,732.13 and 7,811.56 is: 10,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,848.54 : 17,732.13 = 7,811.56 : x
  2. Step 2: Convert to fraction form
    12,848.54/17,732.13 = 7,811.56/x
  3. Step 3: Cross multiply
    12,848.54x = 17,732.13 × 7,811.56
  4. Step 4: Simplify right side
    12,848.54x = 138,515,508.76
  5. Step 5: Solve for x
    x = 138,515,508.76/12,848.54
  6. Step 6: Final answer
    x = 10,780.64

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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.