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Finding the Fourth Proportional to 18,670.73, 25,760.08 and 11,111

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Solution

The fourth proportional to 18,670.73, 25,760.08 and 11,111 is: 15,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.73 : 25,760.08 = 11,111 : x
  2. Step 2: Convert to fraction form
    18,670.73/25,760.08 = 11,111/x
  3. Step 3: Cross multiply
    18,670.73x = 25,760.08 × 11,111
  4. Step 4: Simplify right side
    18,670.73x = 286,220,248.88
  5. Step 5: Solve for x
    x = 286,220,248.88/18,670.73
  6. Step 6: Final answer
    x = 15,329.89

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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.