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Finding the Fourth Proportional to 11,123.58, 15,349.02 and 6,646.38

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Solution

The fourth proportional to 11,123.58, 15,349.02 and 6,646.38 is: 9,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.58 : 15,349.02 = 6,646.38 : x
  2. Step 2: Convert to fraction form
    11,123.58/15,349.02 = 6,646.38/x
  3. Step 3: Cross multiply
    11,123.58x = 15,349.02 × 6,646.38
  4. Step 4: Simplify right side
    11,123.58x = 102,015,386.32
  5. Step 5: Solve for x
    x = 102,015,386.32/11,123.58
  6. Step 6: Final answer
    x = 9,171.10

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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.