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Finding the Fourth Proportional to 11,123, 15,347.28 and 6,646.08

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Solution

The fourth proportional to 11,123, 15,347.28 and 6,646.08 is: 9,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123 : 15,347.28 = 6,646.08 : x
  2. Step 2: Convert to fraction form
    11,123/15,347.28 = 6,646.08/x
  3. Step 3: Cross multiply
    11,123x = 15,347.28 × 6,646.08
  4. Step 4: Simplify right side
    11,123x = 101,999,250.66
  5. Step 5: Solve for x
    x = 101,999,250.66/11,123
  6. Step 6: Final answer
    x = 9,170.12

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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.