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Finding the Fourth Proportional to 17,685.85, 24,406.53 and 9,728.58

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Solution

The fourth proportional to 17,685.85, 24,406.53 and 9,728.58 is: 13,425.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,685.85 : 24,406.53 = 9,728.58 : x
  2. Step 2: Convert to fraction form
    17,685.85/24,406.53 = 9,728.58/x
  3. Step 3: Cross multiply
    17,685.85x = 24,406.53 × 9,728.58
  4. Step 4: Simplify right side
    17,685.85x = 237,440,751.62
  5. Step 5: Solve for x
    x = 237,440,751.62/17,685.85
  6. Step 6: Final answer
    x = 13,425.47

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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.