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Finding the Fourth Proportional to 23,709.86, 35,570.08 and 8,918.90

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Solution

The fourth proportional to 23,709.86, 35,570.08 and 8,918.90 is: 13,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,709.86 : 35,570.08 = 8,918.90 : x
  2. Step 2: Convert to fraction form
    23,709.86/35,570.08 = 8,918.90/x
  3. Step 3: Cross multiply
    23,709.86x = 35,570.08 × 8,918.90
  4. Step 4: Simplify right side
    23,709.86x = 317,245,986.51
  5. Step 5: Solve for x
    x = 317,245,986.51/23,709.86
  6. Step 6: Final answer
    x = 13,380.34

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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.