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Finding the Fourth Proportional to 14,673.40, 21,981.30 and 8,812.60

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Solution

The fourth proportional to 14,673.40, 21,981.30 and 8,812.60 is: 13,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,673.40 : 21,981.30 = 8,812.60 : x
  2. Step 2: Convert to fraction form
    14,673.40/21,981.30 = 8,812.60/x
  3. Step 3: Cross multiply
    14,673.40x = 21,981.30 × 8,812.60
  4. Step 4: Simplify right side
    14,673.40x = 193,712,404.38
  5. Step 5: Solve for x
    x = 193,712,404.38/14,673.40
  6. Step 6: Final answer
    x = 13,201.60

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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.