Home / 11,817.90-16,308.75-6,512.71

Finding the Fourth Proportional to 11,817.90, 16,308.75 and 6,512.71

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Solution

The fourth proportional to 11,817.90, 16,308.75 and 6,512.71 is: 8,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.90 : 16,308.75 = 6,512.71 : x
  2. Step 2: Convert to fraction form
    11,817.90/16,308.75 = 6,512.71/x
  3. Step 3: Cross multiply
    11,817.90x = 16,308.75 × 6,512.71
  4. Step 4: Simplify right side
    11,817.90x = 106,214,159.21
  5. Step 5: Solve for x
    x = 106,214,159.21/11,817.90
  6. Step 6: Final answer
    x = 8,987.57

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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.