Home / 13,684.64-20,518.76-6,650.81

Finding the Fourth Proportional to 13,684.64, 20,518.76 and 6,650.81

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Solution

The fourth proportional to 13,684.64, 20,518.76 and 6,650.81 is: 9,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.64 : 20,518.76 = 6,650.81 : x
  2. Step 2: Convert to fraction form
    13,684.64/20,518.76 = 6,650.81/x
  3. Step 3: Cross multiply
    13,684.64x = 20,518.76 × 6,650.81
  4. Step 4: Simplify right side
    13,684.64x = 136,466,374.20
  5. Step 5: Solve for x
    x = 136,466,374.20/13,684.64
  6. Step 6: Final answer
    x = 9,972.23

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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.