Home / 11,123.82-15,349.36-6,646.63

Finding the Fourth Proportional to 11,123.82, 15,349.36 and 6,646.63

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Solution

The fourth proportional to 11,123.82, 15,349.36 and 6,646.63 is: 9,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.82 : 15,349.36 = 6,646.63 : x
  2. Step 2: Convert to fraction form
    11,123.82/15,349.36 = 6,646.63/x
  3. Step 3: Cross multiply
    11,123.82x = 15,349.36 × 6,646.63
  4. Step 4: Simplify right side
    11,123.82x = 102,021,516.66
  5. Step 5: Solve for x
    x = 102,021,516.66/11,123.82
  6. Step 6: Final answer
    x = 9,171.45

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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.