Home / 11,475.78-15,836.90-6,998.51

Finding the Fourth Proportional to 11,475.78, 15,836.90 and 6,998.51

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Solution

The fourth proportional to 11,475.78, 15,836.90 and 6,998.51 is: 9,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.78 : 15,836.90 = 6,998.51 : x
  2. Step 2: Convert to fraction form
    11,475.78/15,836.90 = 6,998.51/x
  3. Step 3: Cross multiply
    11,475.78x = 15,836.90 × 6,998.51
  4. Step 4: Simplify right side
    11,475.78x = 110,834,588.84
  5. Step 5: Solve for x
    x = 110,834,588.84/11,475.78
  6. Step 6: Final answer
    x = 9,658.13

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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.