Home / 11,511.15-15,875.91-6,790.88

Finding the Fourth Proportional to 11,511.15, 15,875.91 and 6,790.88

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Solution

The fourth proportional to 11,511.15, 15,875.91 and 6,790.88 is: 9,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.15 : 15,875.91 = 6,790.88 : x
  2. Step 2: Convert to fraction form
    11,511.15/15,875.91 = 6,790.88/x
  3. Step 3: Cross multiply
    11,511.15x = 15,875.91 × 6,790.88
  4. Step 4: Simplify right side
    11,511.15x = 107,811,320.32
  5. Step 5: Solve for x
    x = 107,811,320.32/11,511.15
  6. Step 6: Final answer
    x = 9,365.82

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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.