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Finding the Fourth Proportional to 11,279.95, 15,573.40 and 7,248.41

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Solution

The fourth proportional to 11,279.95, 15,573.40 and 7,248.41 is: 10,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.95 : 15,573.40 = 7,248.41 : x
  2. Step 2: Convert to fraction form
    11,279.95/15,573.40 = 7,248.41/x
  3. Step 3: Cross multiply
    11,279.95x = 15,573.40 × 7,248.41
  4. Step 4: Simplify right side
    11,279.95x = 112,882,328.81
  5. Step 5: Solve for x
    x = 112,882,328.81/11,279.95
  6. Step 6: Final answer
    x = 10,007.34

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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.