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Finding the Fourth Proportional to 14,681.88, 20,260.44 and 8,308.68

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Solution

The fourth proportional to 14,681.88, 20,260.44 and 8,308.68 is: 11,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,681.88 : 20,260.44 = 8,308.68 : x
  2. Step 2: Convert to fraction form
    14,681.88/20,260.44 = 8,308.68/x
  3. Step 3: Cross multiply
    14,681.88x = 20,260.44 × 8,308.68
  4. Step 4: Simplify right side
    14,681.88x = 168,337,512.62
  5. Step 5: Solve for x
    x = 168,337,512.62/14,681.88
  6. Step 6: Final answer
    x = 11,465.66

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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.