Home / 17,065.49-23,540.81-9,990.54

Finding the Fourth Proportional to 17,065.49, 23,540.81 and 9,990.54

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Solution

The fourth proportional to 17,065.49, 23,540.81 and 9,990.54 is: 13,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,065.49 : 23,540.81 = 9,990.54 : x
  2. Step 2: Convert to fraction form
    17,065.49/23,540.81 = 9,990.54/x
  3. Step 3: Cross multiply
    17,065.49x = 23,540.81 × 9,990.54
  4. Step 4: Simplify right side
    17,065.49x = 235,185,353.98
  5. Step 5: Solve for x
    x = 235,185,353.98/17,065.49
  6. Step 6: Final answer
    x = 13,781.35

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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.