Home / 13,394.85-18,476.70-8,857.53

Finding the Fourth Proportional to 13,394.85, 18,476.70 and 8,857.53

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Solution

The fourth proportional to 13,394.85, 18,476.70 and 8,857.53 is: 12,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.85 : 18,476.70 = 8,857.53 : x
  2. Step 2: Convert to fraction form
    13,394.85/18,476.70 = 8,857.53/x
  3. Step 3: Cross multiply
    13,394.85x = 18,476.70 × 8,857.53
  4. Step 4: Simplify right side
    13,394.85x = 163,657,924.55
  5. Step 5: Solve for x
    x = 163,657,924.55/13,394.85
  6. Step 6: Final answer
    x = 12,217.97

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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.