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Finding the Fourth Proportional to 10,720.76, 16,086.47 and 4,799.39

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Solution

The fourth proportional to 10,720.76, 16,086.47 and 4,799.39 is: 7,201.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.76 : 16,086.47 = 4,799.39 : x
  2. Step 2: Convert to fraction form
    10,720.76/16,086.47 = 4,799.39/x
  3. Step 3: Cross multiply
    10,720.76x = 16,086.47 × 4,799.39
  4. Step 4: Simplify right side
    10,720.76x = 77,205,138.82
  5. Step 5: Solve for x
    x = 77,205,138.82/10,720.76
  6. Step 6: Final answer
    x = 7,201.46

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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.