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Finding the Fourth Proportional to 18,776.73, 25,911.03 and 10,820.10

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Solution

The fourth proportional to 18,776.73, 25,911.03 and 10,820.10 is: 14,931.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.73 : 25,911.03 = 10,820.10 : x
  2. Step 2: Convert to fraction form
    18,776.73/25,911.03 = 10,820.10/x
  3. Step 3: Cross multiply
    18,776.73x = 25,911.03 × 10,820.10
  4. Step 4: Simplify right side
    18,776.73x = 280,359,935.70
  5. Step 5: Solve for x
    x = 280,359,935.70/18,776.73
  6. Step 6: Final answer
    x = 14,931.24

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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.