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Finding the Fourth Proportional to 10,093.76, 13,929.40 and 5,677.76

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Solution

The fourth proportional to 10,093.76, 13,929.40 and 5,677.76 is: 7,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,093.76 : 13,929.40 = 5,677.76 : x
  2. Step 2: Convert to fraction form
    10,093.76/13,929.40 = 5,677.76/x
  3. Step 3: Cross multiply
    10,093.76x = 13,929.40 × 5,677.76
  4. Step 4: Simplify right side
    10,093.76x = 79,087,790.14
  5. Step 5: Solve for x
    x = 79,087,790.14/10,093.76
  6. Step 6: Final answer
    x = 7,835.32

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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.