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Finding the Fourth Proportional to 20,643.06, 30,935.07 and 16,495.68

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Solution

The fourth proportional to 20,643.06, 30,935.07 and 16,495.68 is: 24,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.06 : 30,935.07 = 16,495.68 : x
  2. Step 2: Convert to fraction form
    20,643.06/30,935.07 = 16,495.68/x
  3. Step 3: Cross multiply
    20,643.06x = 30,935.07 × 16,495.68
  4. Step 4: Simplify right side
    20,643.06x = 510,295,015.50
  5. Step 5: Solve for x
    x = 510,295,015.50/20,643.06
  6. Step 6: Final answer
    x = 24,719.93

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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.