Home / 12,911.36-17,818.96-7,607.84

Finding the Fourth Proportional to 12,911.36, 17,818.96 and 7,607.84

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Solution

The fourth proportional to 12,911.36, 17,818.96 and 7,607.84 is: 10,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.36 : 17,818.96 = 7,607.84 : x
  2. Step 2: Convert to fraction form
    12,911.36/17,818.96 = 7,607.84/x
  3. Step 3: Cross multiply
    12,911.36x = 17,818.96 × 7,607.84
  4. Step 4: Simplify right side
    12,911.36x = 135,563,796.65
  5. Step 5: Solve for x
    x = 135,563,796.65/12,911.36
  6. Step 6: Final answer
    x = 10,499.58

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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.