Home / 13,679.64-18,893.47-9,195.61

Finding the Fourth Proportional to 13,679.64, 18,893.47 and 9,195.61

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Solution

The fourth proportional to 13,679.64, 18,893.47 and 9,195.61 is: 12,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.64 : 18,893.47 = 9,195.61 : x
  2. Step 2: Convert to fraction form
    13,679.64/18,893.47 = 9,195.61/x
  3. Step 3: Cross multiply
    13,679.64x = 18,893.47 × 9,195.61
  4. Step 4: Simplify right side
    13,679.64x = 173,736,981.67
  5. Step 5: Solve for x
    x = 173,736,981.67/13,679.64
  6. Step 6: Final answer
    x = 12,700.41

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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.