Home / 13,549.49-18,656.75-11,861.45

Finding the Fourth Proportional to 13,549.49, 18,656.75 and 11,861.45

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Solution

The fourth proportional to 13,549.49, 18,656.75 and 11,861.45 is: 16,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,549.49 : 18,656.75 = 11,861.45 : x
  2. Step 2: Convert to fraction form
    13,549.49/18,656.75 = 11,861.45/x
  3. Step 3: Cross multiply
    13,549.49x = 18,656.75 × 11,861.45
  4. Step 4: Simplify right side
    13,549.49x = 221,296,107.29
  5. Step 5: Solve for x
    x = 221,296,107.29/13,549.49
  6. Step 6: Final answer
    x = 16,332.43

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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.