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Finding the Fourth Proportional to 14,627.49, 20,185.99 and 7,913.18

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Solution

The fourth proportional to 14,627.49, 20,185.99 and 7,913.18 is: 10,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,627.49 : 20,185.99 = 7,913.18 : x
  2. Step 2: Convert to fraction form
    14,627.49/20,185.99 = 7,913.18/x
  3. Step 3: Cross multiply
    14,627.49x = 20,185.99 × 7,913.18
  4. Step 4: Simplify right side
    14,627.49x = 159,735,372.35
  5. Step 5: Solve for x
    x = 159,735,372.35/14,627.49
  6. Step 6: Final answer
    x = 10,920.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.