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Finding the Fourth Proportional to 18,663.19, 25,760.50 and 12,294.43

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Solution

The fourth proportional to 18,663.19, 25,760.50 and 12,294.43 is: 16,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.19 : 25,760.50 = 12,294.43 : x
  2. Step 2: Convert to fraction form
    18,663.19/25,760.50 = 12,294.43/x
  3. Step 3: Cross multiply
    18,663.19x = 25,760.50 × 12,294.43
  4. Step 4: Simplify right side
    18,663.19x = 316,710,664.02
  5. Step 5: Solve for x
    x = 316,710,664.02/18,663.19
  6. Step 6: Final answer
    x = 16,969.80

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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.