Home / 13,153.85-18,149.33-7,847.63

Finding the Fourth Proportional to 13,153.85, 18,149.33 and 7,847.63

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Solution

The fourth proportional to 13,153.85, 18,149.33 and 7,847.63 is: 10,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.85 : 18,149.33 = 7,847.63 : x
  2. Step 2: Convert to fraction form
    13,153.85/18,149.33 = 7,847.63/x
  3. Step 3: Cross multiply
    13,153.85x = 18,149.33 × 7,847.63
  4. Step 4: Simplify right side
    13,153.85x = 142,429,226.59
  5. Step 5: Solve for x
    x = 142,429,226.59/13,153.85
  6. Step 6: Final answer
    x = 10,827.95

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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.