Home / 13,240.74-18,265.32-8,203.35

Finding the Fourth Proportional to 13,240.74, 18,265.32 and 8,203.35

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Solution

The fourth proportional to 13,240.74, 18,265.32 and 8,203.35 is: 11,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.74 : 18,265.32 = 8,203.35 : x
  2. Step 2: Convert to fraction form
    13,240.74/18,265.32 = 8,203.35/x
  3. Step 3: Cross multiply
    13,240.74x = 18,265.32 × 8,203.35
  4. Step 4: Simplify right side
    13,240.74x = 149,836,812.82
  5. Step 5: Solve for x
    x = 149,836,812.82/13,240.74
  6. Step 6: Final answer
    x = 11,316.35

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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.