Home / 23,181.76-31,986.54-13,623.20

Finding the Fourth Proportional to 23,181.76, 31,986.54 and 13,623.20

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Solution

The fourth proportional to 23,181.76, 31,986.54 and 13,623.20 is: 18,797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,181.76 : 31,986.54 = 13,623.20 : x
  2. Step 2: Convert to fraction form
    23,181.76/31,986.54 = 13,623.20/x
  3. Step 3: Cross multiply
    23,181.76x = 31,986.54 × 13,623.20
  4. Step 4: Simplify right side
    23,181.76x = 435,759,031.73
  5. Step 5: Solve for x
    x = 435,759,031.73/23,181.76
  6. Step 6: Final answer
    x = 18,797.50

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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.