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Finding the Fourth Proportional to 18,294.04, 25,219.92 and 12,986.92

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Solution

The fourth proportional to 18,294.04, 25,219.92 and 12,986.92 is: 17,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.04 : 25,219.92 = 12,986.92 : x
  2. Step 2: Convert to fraction form
    18,294.04/25,219.92 = 12,986.92/x
  3. Step 3: Cross multiply
    18,294.04x = 25,219.92 × 12,986.92
  4. Step 4: Simplify right side
    18,294.04x = 327,529,083.45
  5. Step 5: Solve for x
    x = 327,529,083.45/18,294.04
  6. Step 6: Final answer
    x = 17,903.60

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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.