Home / 8,918.71-13,360.14-5,406.75

Finding the Fourth Proportional to 8,918.71, 13,360.14 and 5,406.75

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Solution

The fourth proportional to 8,918.71, 13,360.14 and 5,406.75 is: 8,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.71 : 13,360.14 = 5,406.75 : x
  2. Step 2: Convert to fraction form
    8,918.71/13,360.14 = 5,406.75/x
  3. Step 3: Cross multiply
    8,918.71x = 13,360.14 × 5,406.75
  4. Step 4: Simplify right side
    8,918.71x = 72,234,936.95
  5. Step 5: Solve for x
    x = 72,234,936.95/8,918.71
  6. Step 6: Final answer
    x = 8,099.26

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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.