Home / 13,240.52-18,265.16-8,455.43

Finding the Fourth Proportional to 13,240.52, 18,265.16 and 8,455.43

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Solution

The fourth proportional to 13,240.52, 18,265.16 and 8,455.43 is: 11,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.52 : 18,265.16 = 8,455.43 : x
  2. Step 2: Convert to fraction form
    13,240.52/18,265.16 = 8,455.43/x
  3. Step 3: Cross multiply
    13,240.52x = 18,265.16 × 8,455.43
  4. Step 4: Simplify right side
    13,240.52x = 154,439,839.74
  5. Step 5: Solve for x
    x = 154,439,839.74/13,240.52
  6. Step 6: Final answer
    x = 11,664.18

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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.