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Finding the Fourth Proportional to 18,359.34, 25,335.72 and 9,975.84

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Solution

The fourth proportional to 18,359.34, 25,335.72 and 9,975.84 is: 13,766.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.34 : 25,335.72 = 9,975.84 : x
  2. Step 2: Convert to fraction form
    18,359.34/25,335.72 = 9,975.84/x
  3. Step 3: Cross multiply
    18,359.34x = 25,335.72 × 9,975.84
  4. Step 4: Simplify right side
    18,359.34x = 252,745,089.00
  5. Step 5: Solve for x
    x = 252,745,089.00/18,359.34
  6. Step 6: Final answer
    x = 13,766.57

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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.