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Finding the Fourth Proportional to 11,258.76, 16,882.05 and 7,978.26

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Solution

The fourth proportional to 11,258.76, 16,882.05 and 7,978.26 is: 11,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,258.76 : 16,882.05 = 7,978.26 : x
  2. Step 2: Convert to fraction form
    11,258.76/16,882.05 = 7,978.26/x
  3. Step 3: Cross multiply
    11,258.76x = 16,882.05 × 7,978.26
  4. Step 4: Simplify right side
    11,258.76x = 134,689,384.23
  5. Step 5: Solve for x
    x = 134,689,384.23/11,258.76
  6. Step 6: Final answer
    x = 11,963.07

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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.