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Finding the Fourth Proportional to 11,403.78, 17,109.92 and 6,970.54

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Solution

The fourth proportional to 11,403.78, 17,109.92 and 6,970.54 is: 10,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.78 : 17,109.92 = 6,970.54 : x
  2. Step 2: Convert to fraction form
    11,403.78/17,109.92 = 6,970.54/x
  3. Step 3: Cross multiply
    11,403.78x = 17,109.92 × 6,970.54
  4. Step 4: Simplify right side
    11,403.78x = 119,265,381.76
  5. Step 5: Solve for x
    x = 119,265,381.76/11,403.78
  6. Step 6: Final answer
    x = 10,458.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.