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Finding the Fourth Proportional to 20,495.63, 30,674.00 and 12,603.14

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Solution

The fourth proportional to 20,495.63, 30,674.00 and 12,603.14 is: 18,862.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.63 : 30,674.00 = 12,603.14 : x
  2. Step 2: Convert to fraction form
    20,495.63/30,674.00 = 12,603.14/x
  3. Step 3: Cross multiply
    20,495.63x = 30,674.00 × 12,603.14
  4. Step 4: Simplify right side
    20,495.63x = 386,588,795.80
  5. Step 5: Solve for x
    x = 386,588,795.80/20,495.63
  6. Step 6: Final answer
    x = 18,862.01

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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.