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Finding the Fourth Proportional to 12,585.92, 17,342.99 and 9,735.99

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Solution

The fourth proportional to 12,585.92, 17,342.99 and 9,735.99 is: 13,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.92 : 17,342.99 = 9,735.99 : x
  2. Step 2: Convert to fraction form
    12,585.92/17,342.99 = 9,735.99/x
  3. Step 3: Cross multiply
    12,585.92x = 17,342.99 × 9,735.99
  4. Step 4: Simplify right side
    12,585.92x = 168,851,140.70
  5. Step 5: Solve for x
    x = 168,851,140.70/12,585.92
  6. Step 6: Final answer
    x = 13,415.87

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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.