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Finding the Fourth Proportional to 8,969.43, 13,454.31 and 5,018.45

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Solution

The fourth proportional to 8,969.43, 13,454.31 and 5,018.45 is: 7,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.43 : 13,454.31 = 5,018.45 : x
  2. Step 2: Convert to fraction form
    8,969.43/13,454.31 = 5,018.45/x
  3. Step 3: Cross multiply
    8,969.43x = 13,454.31 × 5,018.45
  4. Step 4: Simplify right side
    8,969.43x = 67,519,782.02
  5. Step 5: Solve for x
    x = 67,519,782.02/8,969.43
  6. Step 6: Final answer
    x = 7,527.77

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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.