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Finding the Fourth Proportional to 20,054.70, 30,068.77 and 10,688.78

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Solution

The fourth proportional to 20,054.70, 30,068.77 and 10,688.78 is: 16,026.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,054.70 : 30,068.77 = 10,688.78 : x
  2. Step 2: Convert to fraction form
    20,054.70/30,068.77 = 10,688.78/x
  3. Step 3: Cross multiply
    20,054.70x = 30,068.77 × 10,688.78
  4. Step 4: Simplify right side
    20,054.70x = 321,398,467.40
  5. Step 5: Solve for x
    x = 321,398,467.40/20,054.70
  6. Step 6: Final answer
    x = 16,026.09

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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.