Home / 12,655.44-17,439.84-9,111.96

Finding the Fourth Proportional to 12,655.44, 17,439.84 and 9,111.96

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Solution

The fourth proportional to 12,655.44, 17,439.84 and 9,111.96 is: 12,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.44 : 17,439.84 = 9,111.96 : x
  2. Step 2: Convert to fraction form
    12,655.44/17,439.84 = 9,111.96/x
  3. Step 3: Cross multiply
    12,655.44x = 17,439.84 × 9,111.96
  4. Step 4: Simplify right side
    12,655.44x = 158,911,124.49
  5. Step 5: Solve for x
    x = 158,911,124.49/12,655.44
  6. Step 6: Final answer
    x = 12,556.74

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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.