Home / 12,848.24-17,731.26-7,811.64

Finding the Fourth Proportional to 12,848.24, 17,731.26 and 7,811.64

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Solution

The fourth proportional to 12,848.24, 17,731.26 and 7,811.64 is: 10,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,848.24 : 17,731.26 = 7,811.64 : x
  2. Step 2: Convert to fraction form
    12,848.24/17,731.26 = 7,811.64/x
  3. Step 3: Cross multiply
    12,848.24x = 17,731.26 × 7,811.64
  4. Step 4: Simplify right side
    12,848.24x = 138,510,219.87
  5. Step 5: Solve for x
    x = 138,510,219.87/12,848.24
  6. Step 6: Final answer
    x = 10,780.48

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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.