Home / 12,905.13-19,357.69-3,671.13

Finding the Fourth Proportional to 12,905.13, 19,357.69 and 3,671.13

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Solution

The fourth proportional to 12,905.13, 19,357.69 and 3,671.13 is: 5,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.13 : 19,357.69 = 3,671.13 : x
  2. Step 2: Convert to fraction form
    12,905.13/19,357.69 = 3,671.13/x
  3. Step 3: Cross multiply
    12,905.13x = 19,357.69 × 3,671.13
  4. Step 4: Simplify right side
    12,905.13x = 71,064,596.49
  5. Step 5: Solve for x
    x = 71,064,596.49/12,905.13
  6. Step 6: Final answer
    x = 5,506.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.