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Finding the Fourth Proportional to 30,658.21, 45,966.09 and 15,636.18

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Solution

The fourth proportional to 30,658.21, 45,966.09 and 15,636.18 is: 23,443.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.21 : 45,966.09 = 15,636.18 : x
  2. Step 2: Convert to fraction form
    30,658.21/45,966.09 = 15,636.18/x
  3. Step 3: Cross multiply
    30,658.21x = 45,966.09 × 15,636.18
  4. Step 4: Simplify right side
    30,658.21x = 718,733,887.99
  5. Step 5: Solve for x
    x = 718,733,887.99/30,658.21
  6. Step 6: Final answer
    x = 23,443.44

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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.