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Finding the Fourth Proportional to 11,478.84, 15,838.92 and 6,762.48

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Solution

The fourth proportional to 11,478.84, 15,838.92 and 6,762.48 is: 9,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.84 : 15,838.92 = 6,762.48 : x
  2. Step 2: Convert to fraction form
    11,478.84/15,838.92 = 6,762.48/x
  3. Step 3: Cross multiply
    11,478.84x = 15,838.92 × 6,762.48
  4. Step 4: Simplify right side
    11,478.84x = 107,110,379.72
  5. Step 5: Solve for x
    x = 107,110,379.72/11,478.84
  6. Step 6: Final answer
    x = 9,331.12

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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.