Home / 12,811.12-17,671-9,039.76

Finding the Fourth Proportional to 12,811.12, 17,671 and 9,039.76

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Solution

The fourth proportional to 12,811.12, 17,671 and 9,039.76 is: 12,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.12 : 17,671 = 9,039.76 : x
  2. Step 2: Convert to fraction form
    12,811.12/17,671 = 9,039.76/x
  3. Step 3: Cross multiply
    12,811.12x = 17,671 × 9,039.76
  4. Step 4: Simplify right side
    12,811.12x = 159,741,598.96
  5. Step 5: Solve for x
    x = 159,741,598.96/12,811.12
  6. Step 6: Final answer
    x = 12,468.98

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Double scale
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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.