Home / 13,536.79-20,311.25-8,605.15

Finding the Fourth Proportional to 13,536.79, 20,311.25 and 8,605.15

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Solution

The fourth proportional to 13,536.79, 20,311.25 and 8,605.15 is: 12,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,536.79 : 20,311.25 = 8,605.15 : x
  2. Step 2: Convert to fraction form
    13,536.79/20,311.25 = 8,605.15/x
  3. Step 3: Cross multiply
    13,536.79x = 20,311.25 × 8,605.15
  4. Step 4: Simplify right side
    13,536.79x = 174,781,309.91
  5. Step 5: Solve for x
    x = 174,781,309.91/13,536.79
  6. Step 6: Final answer
    x = 12,911.58

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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.