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Finding the Fourth Proportional to 20,569.21, 30,812.71 and 9,460.67

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Solution

The fourth proportional to 20,569.21, 30,812.71 and 9,460.67 is: 14,172.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.21 : 30,812.71 = 9,460.67 : x
  2. Step 2: Convert to fraction form
    20,569.21/30,812.71 = 9,460.67/x
  3. Step 3: Cross multiply
    20,569.21x = 30,812.71 × 9,460.67
  4. Step 4: Simplify right side
    20,569.21x = 291,508,780.43
  5. Step 5: Solve for x
    x = 291,508,780.43/20,569.21
  6. Step 6: Final answer
    x = 14,172.09

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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.